21111012120002 has 16 divisors (see below), whose sum is σ = 37763798078592. Its totient is φ = 8654203726080.

The previous prime is 21111012119999. The next prime is 21111012120053. The reversal of 21111012120002 is 20002121011112.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 32781074399 + ... + 32781075042.

It is an arithmetic number, because the mean of its divisors is an integer number (2360237379912).

Almost surely, 2^{21111012120002} is an apocalyptic number.

21111012120002 is a deficient number, since it is larger than the sum of its proper divisors (16652785958590).

21111012120002 is a wasteful number, since it uses less digits than its factorization.

21111012120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65562149473.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21111012120002 its reverse (20002121011112), we get a palindrome (41113133131114).

The spelling of 21111012120002 in words is "twenty-one trillion, one hundred eleven billion, twelve million, one hundred twenty thousand, two".