121011012 has 36 divisors (see below), whose sum is σ = 309582000. Its totient is φ = 39850032.

The previous prime is 121010999. The next prime is 121011013. The reversal of 121011012 is 210110121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121010985 and 121011003.

It is not an unprimeable number, because it can be changed into a prime (121011013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17262 + ... + 23237.

It is an arithmetic number, because the mean of its divisors is an integer number (8599500).

Almost surely, 2^121011012 is an apocalyptic number.

121011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121011012 is an abundant number, since it is smaller than the sum of its proper divisors (188570988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121011012 is a wasteful number, since it uses less digits than its factorization.

121011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40592 (or 40587 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 121011012 is about 11000.5005340666. The cubic root of 121011012 is about 494.6237483642.

Adding to 121011012 its reverse (210110121), we get a palindrome (331121133).

The spelling of 121011012 in words is "one hundred twenty-one million, eleven thousand, twelve".