22101221002 has 64 divisors (see below), whose sum is σ = 40272168960. Its totient is φ = 8886024000.

The previous prime is 22101220949. The next prime is 22101221099. The reversal of 22101221002 is 20012210122.

It is a happy number.

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, 16909233 + ... + 16910539.

It is an arithmetic number, because the mean of its divisors is an integer number (629252640).

Almost surely, 2^22101221002 is an apocalyptic number.

22101221002 is a deficient number, since it is larger than the sum of its proper divisors (18170947958).

22101221002 is a wasteful number, since it uses less digits than its factorization.

22101221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22101221002 its reverse (20012210122), we get a palindrome (42113431124).

The spelling of 22101221002 in words is "twenty-two billion, one hundred one million, two hundred twenty-one thousand, two".