1212211100998 has 16 divisors (see below), whose sum is σ = 1853053368480. Its totient is φ = 594531939456.

The previous prime is 1212211100987. The next prime is 1212211101041. The reversal of 1212211100998 is 8990011122121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862803 + ... + 1780126.

It is an arithmetic number, because the mean of its divisors is an integer number (115815835530).

Almost surely, 2^{1212211100998} is an apocalyptic number.

1212211100998 is a deficient number, since it is larger than the sum of its proper divisors (640842267482).

1212211100998 is a wasteful number, since it uses less digits than its factorization.

1212211100998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647311.

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 1212211100998 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred thousand, nine hundred ninety-eight".