100121231322 has 48 divisors (see below), whose sum is σ = 258698344320. Its totient is φ = 27362323296.

The previous prime is 100121231297. The next prime is 100121231323. The reversal of 100121231322 is 223132121001.

100121231322 is a `hidden beast` number, since 100 + 1 + 212 + 31 + 322 = 666.

It is a super-2 number, since 2×100121231322² (a number of 23 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 = 100121231295 and 100121231304.

It is not an unprimeable number, because it can be changed into a prime (100121231323) 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, 17271297 + ... + 17277092.

It is an arithmetic number, because the mean of its divisors is an integer number (5389548840).

Almost surely, 2^100121231322 is an apocalyptic number.

100121231322 is an abundant number, since it is smaller than the sum of its proper divisors (158577112998).

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

100121231322 is a wasteful number, since it uses less digits than its factorization.

100121231322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34548427 (or 34548424 counting only the distinct ones).

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

Adding to 100121231322 its reverse (223132121001), we get a palindrome (323253352323).

The spelling of 100121231322 in words is "one hundred billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred twenty-two".