20221617202 has 16 divisors (see below), whose sum is σ = 30886128000. Its totient is φ = 9927655920.

The previous prime is 20221617197. The next prime is 20221617211. The reversal of 20221617202 is 20271612202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324952 + ... + 382147.

It is an arithmetic number, because the mean of its divisors is an integer number (1930383000).

Almost surely, 2^20221617202 is an apocalyptic number.

20221617202 is a deficient number, since it is larger than the sum of its proper divisors (10664510798).

20221617202 is a wasteful number, since it uses less digits than its factorization.

20221617202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707361.

The product of its (nonzero) digits is 1344, while the sum is 25.

Subtracting 20221617202 from its reverse (20271612202), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 20221617202 in words is "twenty billion, two hundred twenty-one million, six hundred seventeen thousand, two hundred two".