21120100022210 has 64 divisors (see below), whose sum is σ = 43885687092480. Its totient is φ = 7168100755200.

The previous prime is 21120100022183. The next prime is 21120100022251. The reversal of 21120100022210 is 1222000102112.

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

It is a Curzon number.

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, 36740381 + ... + 37310799.

It is an arithmetic number, because the mean of its divisors is an integer number (685713860820).

Almost surely, 2^{21120100022210} is an apocalyptic number.

21120100022210 is an abundant number, since it is smaller than the sum of its proper divisors (22765587070270).

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

21120100022210 is a wasteful number, since it uses less digits than its factorization.

21120100022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575771.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21120100022210 its reverse (1222000102112), we get a palindrome (22342100124322).

The spelling of 21120100022210 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, twenty-two thousand, two hundred ten".