22221220210002 has 64 divisors (see below), whose sum is σ = 53894930601600. Its totient is φ = 6730539863040.

The previous prime is 22221220209973. The next prime is 22221220210031. The reversal of 22221220210002 is 20001202212222.

22221220210002 is a `hidden beast` number, since 222 + 212 + 20 + 210 + 0 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (22221220209973) and next prime (22221220210031).

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 31 ways as a sum of consecutive naturals, for example, 7521063 + ... + 10050314.

It is an arithmetic number, because the mean of its divisors is an integer number (842108290650).

Almost surely, 2^{22221220210002} is an apocalyptic number.

22221220210002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221220210002 is an abundant number, since it is smaller than the sum of its proper divisors (31673710391598).

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

22221220210002 is a wasteful number, since it uses less digits than its factorization.

22221220210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17573528 (or 17573522 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22221220210002 its reverse (20001202212222), we get a palindrome (42222422422224).

The spelling of 22221220210002 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, two".