20101120212 has 24 divisors (see below), whose sum is σ = 49661591616. Its totient is φ = 6306233728.

The previous prime is 20101120211. The next prime is 20101120261. The reversal of 20101120212 is 21202110102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101120211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49267248 + ... + 49267655.

It is an arithmetic number, because the mean of its divisors is an integer number (2069232984).

Almost surely, 2^20101120212 is an apocalyptic number.

It is an amenable number.

20101120212 is an abundant number, since it is smaller than the sum of its proper divisors (29560471404).

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

20101120212 is a wasteful number, since it uses less digits than its factorization.

20101120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98534927 (or 98534925 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20101120212 its reverse (21202110102), we get a palindrome (41303230314).

The spelling of 20101120212 in words is "twenty billion, one hundred one million, one hundred twenty thousand, two hundred twelve".