121122013021 has 8 divisors (see below), whose sum is σ = 121799220984. Its totient is φ = 120445317120.

The previous prime is 121122013007. The next prime is 121122013027. The reversal of 121122013021 is 120310221121.

It can be written as a sum of positive squares in 4 ways, for example, as 1412932921 + 119709080100 = 37589^2 + 345990^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 121122013021 - 2¹⁵ = 121121980253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121122012986 and 121122013004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122013027) 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, 351381 + ... + 604741.

It is an arithmetic number, because the mean of its divisors is an integer number (15224902623).

Almost surely, 2^121122013021 is an apocalyptic number.

It is an amenable number.

121122013021 is a deficient number, since it is larger than the sum of its proper divisors (677207963).

121122013021 is a wasteful number, since it uses less digits than its factorization.

121122013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256031.

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

Adding to 121122013021 its reverse (120310221121), we get a palindrome (241432234142).

The spelling of 121122013021 in words is "one hundred twenty-one billion, one hundred twenty-two million, thirteen thousand, twenty-one".