2331021221242 has 12 divisors (see below), whose sum is σ = 4067394171930. Its totient is φ = 999009094776.

The previous prime is 2331021221231. The next prime is 2331021221261. The reversal of 2331021221242 is 2421221201332.

It can be written as a sum of positive squares in only one way, i.e., 1745461103281 + 585560117961 = 1321159^2 + 765219^2 .

It is a super-2 number, since 2×2331021221242² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11892965317 + ... + 11892965512.

Almost surely, 2^{2331021221242} is an apocalyptic number.

2331021221242 is a deficient number, since it is larger than the sum of its proper divisors (1736372950688).

2331021221242 is a wasteful number, since it uses less digits than its factorization.

2331021221242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23785930845 (or 23785930838 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2331021221242 its reverse (2421221201332), we get a palindrome (4752242422574).

The spelling of 2331021221242 in words is "two trillion, three hundred thirty-one billion, twenty-one million, two hundred twenty-one thousand, two hundred forty-two".