121112210122211 has 16 divisors (see below), whose sum is σ = 150997874388480. Its totient is φ = 94372629996480.

The previous prime is 121112210122147. The next prime is 121112210122213. The reversal of 121112210122211 is 112221012211121.

It is a happy number.

It is not a de Polignac number, because 121112210122211 - 2⁶ = 121112210122147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121112210122213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10011650 + ... + 18505608.

It is an arithmetic number, because the mean of its divisors is an integer number (9437367149280).

Almost surely, 2^{121112210122211} is an apocalyptic number.

121112210122211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121112210122211 is a deficient number, since it is larger than the sum of its proper divisors (29885664266269).

121112210122211 is a wasteful number, since it uses less digits than its factorization.

121112210122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8679154.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 121112210122211 its reverse (112221012211121), we get a palindrome (233333222333332).

The spelling of 121112210122211 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred ten million, one hundred twenty-two thousand, two hundred eleven".