121011100211211 has 128 divisors (see below), whose sum is σ = 195281389879296. Its totient is φ = 65196995955840.

The previous prime is 121011100211207. The next prime is 121011100211219. The reversal of 121011100211211 is 112112001110121.

It is not a de Polignac number, because 121011100211211 - 2² = 121011100211207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121011100211219) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9204458340 + ... + 9204471486.

It is an arithmetic number, because the mean of its divisors is an integer number (1525635858432).

Almost surely, 2^{121011100211211} is an apocalyptic number.

121011100211211 is a deficient number, since it is larger than the sum of its proper divisors (74270289668085).

121011100211211 is a wasteful number, since it uses less digits than its factorization.

121011100211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14581.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 121011100211211 its reverse (112112001110121), we get a palindrome (233123101321332).

The spelling of 121011100211211 in words is "one hundred twenty-one trillion, eleven billion, one hundred million, two hundred eleven thousand, two hundred eleven".