990022212112 has 10 divisors (see below), whose sum is σ = 1918168035998. Its totient is φ = 495011106048.

The previous prime is 990022211999. The next prime is 990022212119. The reversal of 990022212112 is 211212220099.

It can be written as a sum of positive squares in only one way, i.e., 976784328976 + 13237883136 = 988324^2 + 115056^2 .

It is not an unprimeable number, because it can be changed into a prime (990022212119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30938194113 + ... + 30938194144.

Almost surely, 2^990022212112 is an apocalyptic number.

It is an amenable number.

990022212112 is a deficient number, since it is larger than the sum of its proper divisors (928145823886).

990022212112 is a wasteful number, since it uses less digits than its factorization.

990022212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61876388265 (or 61876388259 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 990022212112 in words is "nine hundred ninety billion, twenty-two million, two hundred twelve thousand, one hundred twelve".