222121311323131 has 8 divisors (see below), whose sum is σ = 252849555972864. Its totient is φ = 193148966367720.

The previous prime is 222121311323111. The next prime is 222121311323267. The reversal of 222121311323131 is 131323113121222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222121311323131 - 2⁵ = 222121311323099 is a prime.

It is a super-2 number, since 2×222121311323131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222121311323131.

It is not an unprimeable number, because it can be changed into a prime (222121311323111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438974923311 + ... + 438974923816.

It is an arithmetic number, because the mean of its divisors is an integer number (31606194496608).

Almost surely, 2^{222121311323131} is an apocalyptic number.

222121311323131 is a deficient number, since it is larger than the sum of its proper divisors (30728244649733).

222121311323131 is a wasteful number, since it uses less digits than its factorization.

222121311323131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877949847161.

The product of its digits is 2592, while the sum is 28.

Adding to 222121311323131 its reverse (131323113121222), we get a palindrome (353444424444353).

The spelling of 222121311323131 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, three hundred eleven million, three hundred twenty-three thousand, one hundred thirty-one".