20110212121011 has 32 divisors (see below), whose sum is σ = 27308256330240. Its totient is φ = 13161786806784.

The previous prime is 20110212120989. The next prime is 20110212121057. The reversal of 20110212121011 is 11012121201102.

It is a happy number.

It is not a de Polignac number, because 20110212121011 - 2¹³ = 20110212112819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20110212121511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234607186 + ... + 234692888.

It is an arithmetic number, because the mean of its divisors is an integer number (853383010320).

Almost surely, 2^{20110212121011} is an apocalyptic number.

20110212121011 is a deficient number, since it is larger than the sum of its proper divisors (7198044209229).

20110212121011 is a wasteful number, since it uses less digits than its factorization.

20110212121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92395.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20110212121011 its reverse (11012121201102), we get a palindrome (31122333322113).

The spelling of 20110212121011 in words is "twenty trillion, one hundred ten billion, two hundred twelve million, one hundred twenty-one thousand, eleven".