122001021212200 has 72 divisors (see below), whose sum is σ = 307150204228650. Its totient is φ = 45046530896640.

The previous prime is 122001021212179. The next prime is 122001021212219. The reversal of 122001021212200 is 2212120100221.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 128297210596 + 121872724001604 = 358186^2 + 11039598^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1804715035 + ... + 1804782634.

Almost surely, 2^{122001021212200} is an apocalyptic number.

122001021212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122001021212200 is an abundant number, since it is smaller than the sum of its proper divisors (185149183016450).

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

122001021212200 is a wasteful number, since it uses less digits than its factorization.

122001021212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609497711 (or 3609497689 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122001021212200 its reverse (2212120100221), we get a palindrome (124213141312421).

The spelling of 122001021212200 in words is "one hundred twenty-two trillion, one billion, twenty-one million, two hundred twelve thousand, two hundred".