22520121002 has 4 divisors (see below), whose sum is σ = 33780181506. Its totient is φ = 11260060500.

The previous prime is 22520120999. The next prime is 22520121011. The reversal of 22520121002 is 20012102522.

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., 20072939041 + 2447181961 = 141679^2 + 49469^2 .

It is a super-3 number, since 3×22520121002³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5630030249 + ... + 5630030252.

Almost surely, 2^22520121002 is an apocalyptic number.

22520121002 is a deficient number, since it is larger than the sum of its proper divisors (11260060504).

22520121002 is a wasteful number, since it uses less digits than its factorization.

22520121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11260060503.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 22520121002 its reverse (20012102522), we get a palindrome (42532223524).

The spelling of 22520121002 in words is "twenty-two billion, five hundred twenty million, one hundred twenty-one thousand, two".