901221012 has 48 divisors (see below), whose sum is σ = 2338268800. Its totient is φ = 300179520.

The previous prime is 901221007. The next prime is 901221043. The reversal of 901221012 is 210122109.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200712 + ... + 205152.

Almost surely, 2^901221012 is an apocalyptic number.

It is an amenable number.

901221012 is an abundant number, since it is smaller than the sum of its proper divisors (1437047788).

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

901221012 is a wasteful number, since it uses less digits than its factorization.

901221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333 (or 6325 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 901221012 is about 30020.3433025007. The cubic root of 901221012 is about 965.9258073492.

The spelling of 901221012 in words is "nine hundred one million, two hundred twenty-one thousand, twelve".