20111120202 has 64 divisors (see below), whose sum is σ = 41116118400. Its totient is φ = 6556876800.

The previous prime is 20111120177. The next prime is 20111120231. The reversal of 20111120202 is 20202111102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21647674 + ... + 21648602.

It is an arithmetic number, because the mean of its divisors is an integer number (642439350).

Almost surely, 2^20111120202 is an apocalyptic number.

20111120202 is an abundant number, since it is smaller than the sum of its proper divisors (21004998198).

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

20111120202 is a wasteful number, since it uses less digits than its factorization.

20111120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431.

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

Adding to 20111120202 its reverse (20202111102), we get a palindrome (40313231304).

The spelling of 20111120202 in words is "twenty billion, one hundred eleven million, one hundred twenty thousand, two hundred two".