22615400421210 has 256 divisors, whose sum is σ = 56070087929856. Its totient is φ = 5835849136128.

The previous prime is 22615400421203. The next prime is 22615400421217. The reversal of 22615400421210 is 1212400451622.

It is an interprime number because it is at equal distance from previous prime (22615400421203) and next prime (22615400421217).

It is a super-2 number, since 2×22615400421210² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (22615400421217) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22325172664 + ... + 22325173676.

It is an arithmetic number, because the mean of its divisors is an integer number (219023780976).

Almost surely, 2^{22615400421210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22615400421210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28035043964928).

22615400421210 is an abundant number, since it is smaller than the sum of its proper divisors (33454687508646).

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

22615400421210 is a wasteful number, since it uses less digits than its factorization.

22615400421210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 22615400421210 its reverse (1212400451622), we get a palindrome (23827800872832).

The spelling of 22615400421210 in words is "twenty-two trillion, six hundred fifteen billion, four hundred million, four hundred twenty-one thousand, two hundred ten".