222121112202010 has 48 divisors (see below), whose sum is σ = 473869776737736. Its totient is φ = 74718907815552.

The previous prime is 222121112202001. The next prime is 222121112202019. The reversal of 222121112202010 is 10202211121222.

222121112202010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222121112202001) and next prime (222121112202019).

It can be written as a sum of positive squares in 4 ways, for example, as 221614998054121 + 506114147889 = 14886739^2 + 711417^2 .

It is a super-2 number, since 2×222121112202010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222121112202019) 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, 4276468297 + ... + 4276520236.

Almost surely, 2^{222121112202010} is an apocalyptic number.

222121112202010 is an abundant number, since it is smaller than the sum of its proper divisors (251748664535726).

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

222121112202010 is a wasteful number, since it uses less digits than its factorization.

222121112202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8552988607 (or 8552988600 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222121112202010 its reverse (10202211121222), we get a palindrome (232323323323232).

The spelling of 222121112202010 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred two thousand, ten".