21021301131222 has 48 divisors (see below), whose sum is σ = 51041340195840. Its totient is φ = 5652786855552.

The previous prime is 21021301131203. The next prime is 21021301131247. The reversal of 21021301131222 is 22213110312012.

It is a super-3 number, since 3×21021301131222³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865917222 + ... + 865941497.

It is an arithmetic number, because the mean of its divisors is an integer number (1063361254080).

Almost surely, 2^{21021301131222} is an apocalyptic number.

21021301131222 is an abundant number, since it is smaller than the sum of its proper divisors (30020039064618).

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

21021301131222 is a wasteful number, since it uses less digits than its factorization.

21021301131222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731858765 (or 1731858748 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21021301131222 its reverse (22213110312012), we get a palindrome (43234411443234).

The spelling of 21021301131222 in words is "twenty-one trillion, twenty-one billion, three hundred one million, one hundred thirty-one thousand, two hundred twenty-two".