201212122221099 has 24 divisors (see below), whose sum is σ = 317063650863024. Its totient is φ = 121945923456000.

The previous prime is 201212122220969. The next prime is 201212122221107. The reversal of 201212122221099 is 990122221212102.

201212122221099 is a `hidden beast` number, since 2 + 0 + 1 + 212 + 1 + 222 + 210 + 9 + 9 = 666.

It is not a de Polignac number, because 201212122221099 - 2¹⁵ = 201212122188331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201212122221199) 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, 8201959 + ... + 21672479.

It is an arithmetic number, because the mean of its divisors is an integer number (13210985452626).

Almost surely, 2^{201212122221099} is an apocalyptic number.

201212122221099 is a deficient number, since it is larger than the sum of its proper divisors (115851528641925).

201212122221099 is a wasteful number, since it uses less digits than its factorization.

201212122221099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13621419 (or 13621416 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 201212122221099 in words is "two hundred one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, ninety-nine".