1200121010122 has 4 divisors (see below), whose sum is σ = 1800181515186. Its totient is φ = 600060505060.

The previous prime is 1200121010113. The next prime is 1200121010147. The reversal of 1200121010122 is 2210101210021.

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., 1168710182761 + 31410827361 = 1081069^2 + 177231^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300030252529 + ... + 300030252532.

Almost surely, 2^{1200121010122} is an apocalyptic number.

1200121010122 is a deficient number, since it is larger than the sum of its proper divisors (600060505064).

1200121010122 is an equidigital number, since it uses as much as digits as its factorization.

1200121010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600060505063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200121010122 its reverse (2210101210021), we get a palindrome (3410222220143).

The spelling of 1200121010122 in words is "one trillion, two hundred billion, one hundred twenty-one million, ten thousand, one hundred twenty-two".