122222211120021 has 8 divisors (see below), whose sum is σ = 163019395330624. Its totient is φ = 81453250494720.

The previous prime is 122222211120007. The next prime is 122222211120109. The reversal of 122222211120021 is 120021112222221.

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

It is not a de Polignac number, because 122222211120021 - 2¹³ = 122222211111829 is a prime.

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 122222211120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222211120521) 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, 7055886220 + ... + 7055903541.

It is an arithmetic number, because the mean of its divisors is an integer number (20377424416328).

Almost surely, 2^{122222211120021} is an apocalyptic number.

It is an amenable number.

122222211120021 is a deficient number, since it is larger than the sum of its proper divisors (40797184210603).

122222211120021 is a wasteful number, since it uses less digits than its factorization.

122222211120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14111792651.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122222211120021 its reverse (120021112222221), we get a palindrome (242243323342242).

The spelling of 122222211120021 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, two hundred eleven million, one hundred twenty thousand, twenty-one".