220121002 has 8 divisors (see below), whose sum is σ = 330438816. Its totient is φ = 109974732.

The previous prime is 220120993. The next prime is 220121021. The reversal of 220121002 is 200121022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 220121002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39628 + ... + 44839.

It is an arithmetic number, because the mean of its divisors is an integer number (41304852).

Almost surely, 2^220121002 is an apocalyptic number.

220121002 is a deficient number, since it is larger than the sum of its proper divisors (110317814).

220121002 is a wasteful number, since it uses less digits than its factorization.

220121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85772.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 220121002 is about 14836.4753900649. The cubic root of 220121002 is about 603.7917300877.

Adding to 220121002 its reverse (200121022), we get a palindrome (420242024).

The spelling of 220121002 in words is "two hundred twenty million, one hundred twenty-one thousand, two".