1000000012122 has 20 divisors (see below), whose sum is σ = 2240740768266. Its totient is φ = 333333337320.

The previous prime is 1000000012097. The next prime is 1000000012127. The reversal of 1000000012122 is 2212100000001.

It can be written as a sum of positive squares in only one way, i.e., 632134714761 + 367865297361 = 795069^2 + 606519^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000000012127) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3086419629 + ... + 3086419952.

Almost surely, 2^{1000000012122} is an apocalyptic number.

1000000012122 is an abundant number, since it is smaller than the sum of its proper divisors (1240740756144).

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

1000000012122 is an equidigital number, since it uses as much as digits as its factorization.

1000000012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172839595 (or 6172839586 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000000012122 its reverse (2212100000001), we get a palindrome (3212100012123).

The spelling of 1000000012122 in words is "one trillion, twelve thousand, one hundred twenty-two".