1011201100 has 72 divisors (see below), whose sum is σ = 2700709088. Its totient is φ = 320025600.

The previous prime is 1011201091. The next prime is 1011201119. The reversal of 1011201100 is 11021101.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46461 + ... + 64660.

Almost surely, 2^1011201100 is an apocalyptic number.

1011201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011201100 is an abundant number, since it is smaller than the sum of its proper divisors (1689507988).

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

1011201100 is a wasteful number, since it uses less digits than its factorization.

1011201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111155 (or 111148 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1011201100 is about 31799.3883588977. The cubic root of 1011201100 is about 1003.7198455913.

Adding to 1011201100 its reverse (11021101), we get a palindrome (1022222201).

The spelling of 1011201100 in words is "one billion, eleven million, two hundred one thousand, one hundred".