1231301200122 has 48 divisors (see below), whose sum is σ = 3064899382272. Its totient is φ = 349958449440.

The previous prime is 1231301200121. The next prime is 1231301200127. The reversal of 1231301200122 is 2210021031321.

1231301200122 is a `hidden beast` number, since 12 + 31 + 301 + 200 + 122 = 666.

It is a super-2 number, since 2×1231301200122² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1231301200095 and 1231301200104.

It is not an unprimeable number, because it can be changed into a prime (1231301200121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25557693 + ... + 25605824.

It is an arithmetic number, because the mean of its divisors is an integer number (63852070464).

Almost surely, 2^{1231301200122} is an apocalyptic number.

1231301200122 is an abundant number, since it is smaller than the sum of its proper divisors (1833598182150).

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

1231301200122 is a wasteful number, since it uses less digits than its factorization.

1231301200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51163723 (or 51163720 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1231301200122 its reverse (2210021031321), we get a palindrome (3441322231443).

The spelling of 1231301200122 in words is "one trillion, two hundred thirty-one billion, three hundred one million, two hundred thousand, one hundred twenty-two".