22022121021012 has 72 divisors (see below), whose sum is σ = 64237125470336. Its totient is φ = 6230946855744.

The previous prime is 22022121020989. The next prime is 22022121021031. The reversal of 22022121021012 is 21012012122022.

It is a happy number.

22022121021012 is a `hidden beast` number, since 2 + 20 + 221 + 210 + 210 + 1 + 2 = 666.

It is a super-2 number, since 2×22022121021012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 424194283 + ... + 424246194.

Almost surely, 2^{22022121021012} is an apocalyptic number.

It is an amenable number.

22022121021012 is an abundant number, since it is smaller than the sum of its proper divisors (42215004449324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22022121021012 is a wasteful number, since it uses less digits than its factorization.

22022121021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848440597 (or 848440592 counting only the distinct ones).

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

Adding to 22022121021012 its reverse (21012012122022), we get a palindrome (43034133143034).

The spelling of 22022121021012 in words is "twenty-two trillion, twenty-two billion, one hundred twenty-one million, twenty-one thousand, twelve".