1212210998964 has 72 divisors (see below), whose sum is σ = 3510030829760. Its totient is φ = 345546093312.

The previous prime is 1212210998963. The next prime is 1212210998987. The reversal of 1212210998964 is 4698990122121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212210998964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210998963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5445574 + ... + 5663805.

Almost surely, 2^{1212210998964} is an apocalyptic number.

1212210998964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1212210998964 is an abundant number, since it is smaller than the sum of its proper divisors (2297819830796).

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

1212210998964 is a wasteful number, since it uses less digits than its factorization.

1212210998964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109829 (or 11109824 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 1212210998964 in words is "one trillion, two hundred twelve billion, two hundred ten million, nine hundred ninety-eight thousand, nine hundred sixty-four".