122222012010021 has 96 divisors (see below), whose sum is σ = 221888069664768. Its totient is φ = 62977957902720.

The previous prime is 122222012010019. The next prime is 122222012010023. The reversal of 122222012010021 is 120010210222221.

It is a happy number.

122222012010021 is a `hidden beast` number, since 1 + 222 + 220 + 1 + 201 + 0 + 0 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (122222012010019) and next prime (122222012010023).

It is not a de Polignac number, because 122222012010021 - 2¹ = 122222012010019 is a prime.

It is a super-3 number, since 3×122222012010021³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122222012009976 and 122222012010003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222012010023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 400033311 + ... + 400338723.

It is an arithmetic number, because the mean of its divisors is an integer number (2311334059008).

Almost surely, 2^{122222012010021} is an apocalyptic number.

122222012010021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122222012010021 is a deficient number, since it is larger than the sum of its proper divisors (99666057654747).

122222012010021 is a wasteful number, since it uses less digits than its factorization.

122222012010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310111 (or 310108 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122222012010021 its reverse (120010210222221), we get a palindrome (242232222232242).

The spelling of 122222012010021 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, twelve million, ten thousand, twenty-one".