2120410021242 has 32 divisors (see below), whose sum is σ = 4432666094208. Its totient is φ = 674932645376.

The previous prime is 2120410021229. The next prime is 2120410021243. The reversal of 2120410021242 is 2421200140212.

It is a super-2 number, since 2×2120410021242² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2120410021243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12873723 + ... + 13037390.

It is an arithmetic number, because the mean of its divisors is an integer number (138520815444).

Almost surely, 2^{2120410021242} is an apocalyptic number.

2120410021242 is an abundant number, since it is smaller than the sum of its proper divisors (2312256072966).

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

2120410021242 is a wasteful number, since it uses less digits than its factorization.

2120410021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25911734.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2120410021242 its reverse (2421200140212), we get a palindrome (4541610161454).

The spelling of 2120410021242 in words is "two trillion, one hundred twenty billion, four hundred ten million, twenty-one thousand, two hundred forty-two".