121100211321 has 16 divisors (see below), whose sum is σ = 163935408000. Its totient is φ = 79507906560.

The previous prime is 121100211307. The next prime is 121100211329. The reversal of 121100211321 is 123112001121.

It is not a de Polignac number, because 121100211321 - 2²¹ = 121098114169 is a prime.

It is a super-2 number, since 2×121100211321² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121100211321.

It is not an unprimeable number, because it can be changed into a prime (121100211329) 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, 1026696 + ... + 1138553.

It is an arithmetic number, because the mean of its divisors is an integer number (10245963000).

Almost surely, 2^121100211321 is an apocalyptic number.

It is an amenable number.

121100211321 is a deficient number, since it is larger than the sum of its proper divisors (42835196679).

121100211321 is a wasteful number, since it uses less digits than its factorization.

121100211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165536.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121100211321 its reverse (123112001121), we get a palindrome (244212212442).

The spelling of 121100211321 in words is "one hundred twenty-one billion, one hundred million, two hundred eleven thousand, three hundred twenty-one".