22220121002 has 4 divisors (see below), whose sum is σ = 33330181506. Its totient is φ = 11110060500.

The previous prime is 22220120953. The next prime is 22220121029. The reversal of 22220121002 is 20012102222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21048496561 + 1171624441 = 145081^2 + 34229^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555030249 + ... + 5555030252.

Almost surely, 2^22220121002 is an apocalyptic number.

22220121002 is a deficient number, since it is larger than the sum of its proper divisors (11110060504).

22220121002 is a wasteful number, since it uses less digits than its factorization.

22220121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110060503.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22220121002 its reverse (20012102222), we get a palindrome (42232223224).

The spelling of 22220121002 in words is "twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, two".