1000200021122 has 4 divisors (see below), whose sum is σ = 1500300031686. Its totient is φ = 500100010560.

The previous prime is 1000200021113. The next prime is 1000200021179. The reversal of 1000200021122 is 2211200020001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 768618670681 + 231581350441 = 876709^2 + 481229^2 .

It is a super-2 number, since 2×1000200021122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250050005279 + ... + 250050005282.

Almost surely, 2^{1000200021122} is an apocalyptic number.

1000200021122 is a deficient number, since it is larger than the sum of its proper divisors (500100010564).

1000200021122 is an equidigital number, since it uses as much as digits as its factorization.

1000200021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500100010563.

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

Adding to 1000200021122 its reverse (2211200020001), we get a palindrome (3211400041123).

The spelling of 1000200021122 in words is "one trillion, two hundred million, twenty-one thousand, one hundred twenty-two".