21030221212322 has 32 divisors (see below), whose sum is σ = 37984513462272. Its totient is φ = 8537384609424.

The previous prime is 21030221212321. The next prime is 21030221212349. The reversal of 21030221212322 is 22321212203012.

It is a happy number.

It is a super-5 number, since 5×21030221212322⁵ (a number of 68 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (21030221212321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317011718 + ... + 317078049.

It is an arithmetic number, because the mean of its divisors is an integer number (1187016045696).

Almost surely, 2^{21030221212322} is an apocalyptic number.

21030221212322 is a deficient number, since it is larger than the sum of its proper divisors (16954292249950).

21030221212322 is a wasteful number, since it uses less digits than its factorization.

21030221212322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634089902.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21030221212322 its reverse (22321212203012), we get a palindrome (43351433415334).

The spelling of 21030221212322 in words is "twenty-one trillion, thirty billion, two hundred twenty-one million, two hundred twelve thousand, three hundred twenty-two".