22021235312012 has 12 divisors (see below), whose sum is σ = 38674304722536. Its totient is φ = 10971433962720.

The previous prime is 22021235311981. The next prime is 22021235312047. The reversal of 22021235312012 is 21021353212022.

It is a happy number.

It is a super-3 number, since 3×22021235312012³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9795922058 + ... + 9795924305.

It is an arithmetic number, because the mean of its divisors is an integer number (3222858726878).

Almost surely, 2^{22021235312012} is an apocalyptic number.

It is an amenable number.

22021235312012 is a deficient number, since it is larger than the sum of its proper divisors (16653069410524).

22021235312012 is a wasteful number, since it uses less digits than its factorization.

22021235312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19591846648 (or 19591846646 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 22021235312012 its reverse (21021353212022), we get a palindrome (43042588524034).

The spelling of 22021235312012 in words is "twenty-two trillion, twenty-one billion, two hundred thirty-five million, three hundred twelve thousand, twelve".