121021122013 has 8 divisors (see below), whose sum is σ = 132063443136. Its totient is φ = 109985534400.

The previous prime is 121021121957. The next prime is 121021122049. The reversal of 121021122013 is 310221120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121021122013 is a prime.

It is a super-2 number, since 2×121021122013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021125013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1645756 + ... + 1717717.

It is an arithmetic number, because the mean of its divisors is an integer number (16507930392).

Almost surely, 2^121021122013 is an apocalyptic number.

It is an amenable number.

121021122013 is a deficient number, since it is larger than the sum of its proper divisors (11042321123).

121021122013 is a wasteful number, since it uses less digits than its factorization.

121021122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366755.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121021122013 its reverse (310221120121), we get a palindrome (431242242134).

It can be divided in two parts, 12 and 1021122013, that added together give a square (1021122025 = 31955²).

The spelling of 121021122013 in words is "one hundred twenty-one billion, twenty-one million, one hundred twenty-two thousand, thirteen".