1201222121202 has 24 divisors (see below), whose sum is σ = 2602827581484. Its totient is φ = 400379734944.

The previous prime is 1201222121189. The next prime is 1201222121213. The reversal of 1201222121202 is 2021212221021.

It is a happy number.

1201222121202 is a `hidden beast` number, since 120 + 1 + 222 + 121 + 202 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1079107517601 + 122114603601 = 1038801^2 + 349449^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2034373 + ... + 2557560.

Almost surely, 2^{1201222121202} is an apocalyptic number.

1201222121202 is an abundant number, since it is smaller than the sum of its proper divisors (1401605460282).

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

1201222121202 is a wasteful number, since it uses less digits than its factorization.

1201222121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606474 (or 4606471 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1201222121202 its reverse (2021212221021), we get a palindrome (3222434342223).

The spelling of 1201222121202 in words is "one trillion, two hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred two".