200122121000 has 32 divisors (see below), whose sum is σ = 468285765480. Its totient is φ = 80048848000.

The previous prime is 200122120999. The next prime is 200122121011. The reversal of 200122121000 is 121221002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 90983069956 + 109139051044 = 301634^2 + 330362^2 .

It is a super-3 number, since 3×200122121000³ (a number of 35 digits) contains 333 as substring.

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, 100060061 + ... + 100062060.

Almost surely, 2^200122121000 is an apocalyptic number.

200122121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200122121000 is an abundant number, since it is smaller than the sum of its proper divisors (268163644480).

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

200122121000 is a wasteful number, since it uses less digits than its factorization.

200122121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200122142 (or 200122128 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200122121000 its reverse (121221002), we get a palindrome (200243342002).

The spelling of 200122121000 in words is "two hundred billion, one hundred twenty-two million, one hundred twenty-one thousand".