212142120984 has 64 divisors (see below), whose sum is σ = 600402261600. Its totient is φ = 69379809408.

The previous prime is 212142120961. The next prime is 212142121021. The reversal of 212142120984 is 489021241212.

212142120984 is a `hidden beast` number, since 2 + 1 + 21 + 421 + 209 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 9254019 + ... + 9276914.

Almost surely, 2^212142120984 is an apocalyptic number.

212142120984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212142120984 is an abundant number, since it is smaller than the sum of its proper divisors (388260140616).

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

212142120984 is a wasteful number, since it uses less digits than its factorization.

212142120984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18531001 (or 18530991 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 212142120984 in words is "two hundred twelve billion, one hundred forty-two million, one hundred twenty thousand, nine hundred eighty-four".