2101121232 has 80 divisors (see below), whose sum is σ = 6529820160. Its totient is φ = 568722816.

The previous prime is 2101121207. The next prime is 2101121237. The reversal of 2101121232 is 2321211012.

It is a super-2 number, since 2×2101121232² = 8829420863122395648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101121237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158178 + ... + 170945.

It is an arithmetic number, because the mean of its divisors is an integer number (81622752).

Almost surely, 2^2101121232 is an apocalyptic number.

It is an amenable number.

2101121232 is an abundant number, since it is smaller than the sum of its proper divisors (4428698928).

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

2101121232 is a wasteful number, since it uses less digits than its factorization.

2101121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329160 (or 329154 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2101121232 is about 45837.9889611226. The cubic root of 2101121232 is about 1280.8070333804.

Adding to 2101121232 its reverse (2321211012), we get a palindrome (4422332244).

The spelling of 2101121232 in words is "two billion, one hundred one million, one hundred twenty-one thousand, two hundred thirty-two".