101220120234 has 40 divisors (see below), whose sum is σ = 228330303300. Its totient is φ = 33513588864.

The previous prime is 101220120233. The next prime is 101220120247. The reversal of 101220120234 is 432021022101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 96270575625 + 4949544609 = 310275^2 + 70353^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101220120233) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2072559 + ... + 2120834.

Almost surely, 2^101220120234 is an apocalyptic number.

101220120234 is an abundant number, since it is smaller than the sum of its proper divisors (127110183066).

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

101220120234 is a wasteful number, since it uses less digits than its factorization.

101220120234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193556 (or 4193547 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 101220120234 its reverse (432021022101), we get a palindrome (533241142335).

The spelling of 101220120234 in words is "one hundred one billion, two hundred twenty million, one hundred twenty thousand, two hundred thirty-four".