1231122021098 has 16 divisors (see below), whose sum is σ = 1850230628424. Its totient is φ = 614379171840.

The previous prime is 1231122021097. The next prime is 1231122021149. The reversal of 1231122021098 is 8901202211321.

It can be written as a sum of positive squares in 4 ways, for example, as 1167810906409 + 63311114689 = 1080653^2 + 251617^2 .

It is a super-2 number, since 2×1231122021098² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1231122021097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3414086 + ... + 3757422.

Almost surely, 2^{1231122021098} is an apocalyptic number.

1231122021098 is a deficient number, since it is larger than the sum of its proper divisors (619108607326).

1231122021098 is a wasteful number, since it uses less digits than its factorization.

1231122021098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346777.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 1231122021098 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-two million, twenty-one thousand, ninety-eight".