22221011212002 has 24 divisors (see below), whose sum is σ = 48961550130480. Its totient is φ = 7281461300760.

The previous prime is 22221011211961. The next prime is 22221011212031. The reversal of 22221011212002 is 20021211012222.

It is a happy number.

22221011212002 is a `hidden beast` number, since 222 + 210 + 11 + 21 + 200 + 2 = 666.

It is a super-4 number, since 4×22221011212002⁴ (a number of 54 digits) contains 4444 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10461868624 + ... + 10461870747.

It is an arithmetic number, because the mean of its divisors is an integer number (2040064588770).

Almost surely, 2^{22221011212002} is an apocalyptic number.

22221011212002 is an abundant number, since it is smaller than the sum of its proper divisors (26740538918478).

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

22221011212002 is a wasteful number, since it uses less digits than its factorization.

22221011212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20923739438 (or 20923739435 counting only the distinct ones).

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

Adding to 22221011212002 its reverse (20021211012222), we get a palindrome (42242222224224).

The spelling of 22221011212002 in words is "twenty-two trillion, two hundred twenty-one billion, eleven million, two hundred twelve thousand, two".