220121021000990 has 8 divisors (see below), whose sum is σ = 396217837801800. Its totient is φ = 88048408400392.

The previous prime is 220121021000989. The next prime is 220121021001019. The reversal of 220121021000990 is 99000120121022.

220121021000990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 11006051050040 + ... + 11006051050059.

It is an arithmetic number, because the mean of its divisors is an integer number (49527229725225).

Almost surely, 2^{220121021000990} is an apocalyptic number.

220121021000990 is a deficient number, since it is larger than the sum of its proper divisors (176096816800810).

220121021000990 is a wasteful number, since it uses less digits than its factorization.

220121021000990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22012102100106.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 220121021000990 in words is "two hundred twenty trillion, one hundred twenty-one billion, twenty-one million, nine hundred ninety", and thus it is an aban number.