21111012011202 has 16 divisors (see below), whose sum is σ = 42222086400000. Its totient is φ = 7036993607472.

The previous prime is 21111012011153. The next prime is 21111012011273. The reversal of 21111012011202 is 20211021011112.

It is a happy number.

It is a super-2 number, since 2×21111012011202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600928 + ... + 6999060.

It is an arithmetic number, because the mean of its divisors is an integer number (2638880400000).

Almost surely, 2^{21111012011202} is an apocalyptic number.

21111012011202 is an abundant number, since it is smaller than the sum of its proper divisors (21111074388798).

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

21111012011202 is a wasteful number, since it uses less digits than its factorization.

21111012011202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198137.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21111012011202 its reverse (20211021011112), we get a palindrome (41322033022314).

The spelling of 21111012011202 in words is "twenty-one trillion, one hundred eleven billion, twelve million, eleven thousand, two hundred two".