20121110011210 has 32 divisors (see below), whose sum is σ = 39007378040400. Its totient is φ = 7428689084928.

The previous prime is 20121110011157. The next prime is 20121110011267. The reversal of 20121110011210 is 1211001112102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5723706950329 + 14397403060881 = 2392427^2 + 3794391^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 5199547 + ... + 8202286.

Almost surely, 2^{20121110011210} is an apocalyptic number.

20121110011210 is a deficient number, since it is larger than the sum of its proper divisors (18886268029190).

20121110011210 is a wasteful number, since it uses less digits than its factorization.

20121110011210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13413402.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20121110011210 its reverse (1211001112102), we get a palindrome (21332111123312).

The spelling of 20121110011210 in words is "twenty trillion, one hundred twenty-one billion, one hundred ten million, eleven thousand, two hundred ten".