21112201121210 has 32 divisors (see below), whose sum is σ = 38020946616000. Its totient is φ = 8440662672000.

The previous prime is 21112201121131. The next prime is 21112201121237. The reversal of 21112201121210 is 1212110221112.

It is a super-2 number, since 2×21112201121210² (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, 177087401 + ... + 177206579.

It is an arithmetic number, because the mean of its divisors is an integer number (1188154581750).

Almost surely, 2^{21112201121210} is an apocalyptic number.

21112201121210 is a deficient number, since it is larger than the sum of its proper divisors (16908745494790).

21112201121210 is a wasteful number, since it uses less digits than its factorization.

21112201121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127886.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21112201121210 its reverse (1212110221112), we get a palindrome (22324311342322).

The spelling of 21112201121210 in words is "twenty-one trillion, one hundred twelve billion, two hundred one million, one hundred twenty-one thousand, two hundred ten".