21122211230210 has 16 divisors (see below), whose sum is σ = 38070606033792. Its totient is φ = 8437634310000.

The previous prime is 21122211230171. The next prime is 21122211230269. The reversal of 21122211230210 is 1203211222112.

It is a super-2 number, since 2×21122211230210² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

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, 1406264876 + ... + 1406279895.

It is an arithmetic number, because the mean of its divisors is an integer number (2379412877112).

Almost surely, 2^{21122211230210} is an apocalyptic number.

21122211230210 is a deficient number, since it is larger than the sum of its proper divisors (16948394803582).

21122211230210 is a wasteful number, since it uses less digits than its factorization.

21122211230210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812545529.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21122211230210 its reverse (1203211222112), we get a palindrome (22325422452322).

The spelling of 21122211230210 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred eleven million, two hundred thirty thousand, two hundred ten".