121012211101211 has 32 divisors (see below), whose sum is σ = 132015804134400. Its totient is φ = 110486711301120.

The previous prime is 121012211101193. The next prime is 121012211101241. The reversal of 121012211101211 is 112101112210121.

It is a de Polignac number, because none of the positive numbers 2^k-121012211101211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121012211101211.

It is not an unprimeable number, because it can be changed into a prime (121012211101241) 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, 1085343176 + ... + 1085454666.

It is an arithmetic number, because the mean of its divisors is an integer number (4125493879200).

Almost surely, 2^{121012211101211} is an apocalyptic number.

121012211101211 is a deficient number, since it is larger than the sum of its proper divisors (11003593033189).

121012211101211 is a wasteful number, since it uses less digits than its factorization.

121012211101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115139.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121012211101211 its reverse (112101112210121), we get a palindrome (233113323311332).

The spelling of 121012211101211 in words is "one hundred twenty-one trillion, twelve billion, two hundred eleven million, one hundred one thousand, two hundred eleven".