122231000021 has 16 divisors (see below), whose sum is σ = 133163993088. Its totient is φ = 111520488000.

The previous prime is 122231000011. The next prime is 122231000041. The reversal of 122231000021 is 120000132221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122231000021 - 2¹⁸ = 122230737877 is a prime.

It is a super-2 number, since 2×122231000021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122231000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691436 + ... + 850026.

It is an arithmetic number, because the mean of its divisors is an integer number (8322749568).

Almost surely, 2^122231000021 is an apocalyptic number.

It is an amenable number.

122231000021 is a deficient number, since it is larger than the sum of its proper divisors (10932993067).

122231000021 is a wasteful number, since it uses less digits than its factorization.

122231000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159292.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 122231000021 its reverse (120000132221), we get a palindrome (242231132242).

The spelling of 122231000021 in words is "one hundred twenty-two billion, two hundred thirty-one million, twenty-one", and thus it is an aban number.