212220101998 has 16 divisors (see below), whose sum is σ = 320616178560. Its totient is φ = 105349923000.

The previous prime is 212220101963. The next prime is 212220101999. The reversal of 212220101998 is 899101022212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220101999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243828 + ... + 695623.

It is an arithmetic number, because the mean of its divisors is an integer number (20038511160).

Almost surely, 2^212220101998 is an apocalyptic number.

212220101998 is a deficient number, since it is larger than the sum of its proper divisors (108396076562).

212220101998 is a wasteful number, since it uses less digits than its factorization.

212220101998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940263.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 212220101998 in words is "two hundred twelve billion, two hundred twenty million, one hundred one thousand, nine hundred ninety-eight".