22011212221002 has 24 divisors (see below), whose sum is σ = 47691198681984. Its totient is φ = 7337033991144.

The previous prime is 22011212220919. The next prime is 22011212221013. The reversal of 22011212221002 is 20012221211022.

It is a happy number.

22011212221002 is a `hidden beast` number, since 220 + 1 + 121 + 222 + 100 + 2 = 666.

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, 760093 + ... + 6678335.

It is an arithmetic number, because the mean of its divisors is an integer number (1987133278416).

Almost surely, 2^{22011212221002} is an apocalyptic number.

22011212221002 is an abundant number, since it is smaller than the sum of its proper divisors (25679986460982).

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

22011212221002 is a wasteful number, since it uses less digits than its factorization.

22011212221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124874 (or 6124871 counting only the distinct ones).

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

Adding to 22011212221002 its reverse (20012221211022), we get a palindrome (42023433432024).

The spelling of 22011212221002 in words is "twenty-two trillion, eleven billion, two hundred twelve million, two hundred twenty-one thousand, two".