122122222001021 has 16 divisors (see below), whose sum is σ = 135409006334400. Its totient is φ = 109199585462400.

The previous prime is 122122222001011. The next prime is 122122222001023. The reversal of 122122222001021 is 120100222221221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122122222001021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122122222000984 and 122122222001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122222001023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153812585 + ... + 154604513.

It is an arithmetic number, because the mean of its divisors is an integer number (8463062895900).

Almost surely, 2^{122122222001021} is an apocalyptic number.

122122222001021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122122222001021 is a deficient number, since it is larger than the sum of its proper divisors (13286784333379).

122122222001021 is a wasteful number, since it uses less digits than its factorization.

122122222001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021820.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 122122222001021 its reverse (120100222221221), we get a palindrome (242222444222242).

The spelling of 122122222001021 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, two hundred twenty-two million, one thousand, twenty-one".