121021022322221 has 32 divisors (see below), whose sum is σ = 153356625934848. Its totient is φ = 93053270661120.

The previous prime is 121021022322173. The next prime is 121021022322229. The reversal of 121021022322221 is 122223220120121.

It is not a de Polignac number, because 121021022322221 - 2¹⁴ = 121021022305837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021022322229) 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, 77908250 + ... + 79446443.

It is an arithmetic number, because the mean of its divisors is an integer number (4792394560464).

Almost surely, 2^{121021022322221} is an apocalyptic number.

It is an amenable number.

121021022322221 is a deficient number, since it is larger than the sum of its proper divisors (32335603612627).

121021022322221 is a wasteful number, since it uses less digits than its factorization.

121021022322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157355021.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 121021022322221 its reverse (122223220120121), we get a palindrome (243244242442342).

The spelling of 121021022322221 in words is "one hundred twenty-one trillion, twenty-one billion, twenty-two million, three hundred twenty-two thousand, two hundred twenty-one".