21120102211010 has 128 divisors (see below), whose sum is σ = 43895135305728. Its totient is φ = 7245165600000.

The previous prime is 21120102211003. The next prime is 21120102211037. The reversal of 21120102211010 is 1011220102112.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39965264 + ... + 40490276.

It is an arithmetic number, because the mean of its divisors is an integer number (342930744576).

Almost surely, 2^{21120102211010} is an apocalyptic number.

21120102211010 is an abundant number, since it is smaller than the sum of its proper divisors (22775033094718).

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

21120102211010 is a wasteful number, since it uses less digits than its factorization.

21120102211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525360.

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

Adding to 21120102211010 its reverse (1011220102112), we get a palindrome (22131322313122).

The spelling of 21120102211010 in words is "twenty-one trillion, one hundred twenty billion, one hundred two million, two hundred eleven thousand, ten".