20220220221990 has 32 divisors (see below), whose sum is σ = 48528685499616. Its totient is φ = 5392041285120.

The previous prime is 20220220221989. The next prime is 20220220222003. The reversal of 20220220221990 is 9912202202202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10285630 + ... + 12092750.

It is an arithmetic number, because the mean of its divisors is an integer number (1516521421863).

Almost surely, 2^{20220220221990} is an apocalyptic number.

20220220221990 is an abundant number, since it is smaller than the sum of its proper divisors (28308465277626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20220220221990 is a wasteful number, since it uses less digits than its factorization.

20220220221990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180104.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 20220220221990 in words is "twenty trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, nine hundred ninety".