21001201112210 has 32 divisors (see below), whose sum is σ = 41355545836032. Its totient is φ = 7615166394880.

The previous prime is 21001201112201. The next prime is 21001201112239. The reversal of 21001201112210 is 1221110210012.

It is a super-2 number, since 2×21001201112210² (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 15 ways as a sum of consecutive naturals, for example, 270386114 + ... + 270463773.

It is an arithmetic number, because the mean of its divisors is an integer number (1292360807376).

Almost surely, 2^{21001201112210} is an apocalyptic number.

21001201112210 is a deficient number, since it is larger than the sum of its proper divisors (20354344723822).

21001201112210 is a wasteful number, since it uses less digits than its factorization.

21001201112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540850258.

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

Adding to 21001201112210 its reverse (1221110210012), we get a palindrome (22222311322222).

The spelling of 21001201112210 in words is "twenty-one trillion, one billion, two hundred one million, one hundred twelve thousand, two hundred ten".