121011303211021 has 32 divisors (see below), whose sum is σ = 124636417044480. Its totient is φ = 117442355284800.

The previous prime is 121011303210997. The next prime is 121011303211033. The reversal of 121011303211021 is 120112303110121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121011303211021 is a prime.

It is a super-2 number, since 2×121011303211021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121011303211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011303211091) 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, 2711837116 + ... + 2711881738.

It is an arithmetic number, because the mean of its divisors is an integer number (3894888032640).

Almost surely, 2^{121011303211021} is an apocalyptic number.

It is an amenable number.

121011303211021 is a deficient number, since it is larger than the sum of its proper divisors (3625113833459).

121011303211021 is a wasteful number, since it uses less digits than its factorization.

121011303211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46057.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121011303211021 its reverse (120112303110121), we get a palindrome (241123606321142).

The spelling of 121011303211021 in words is "one hundred twenty-one trillion, eleven billion, three hundred three million, two hundred eleven thousand, twenty-one".