20211121221310 has 16 divisors (see below), whose sum is σ = 36380105159616. Its totient is φ = 8084429163808.

The previous prime is 20211121221293. The next prime is 20211121221311. The reversal of 20211121221310 is 1312212111202.

It is a super-2 number, since 2×20211121221310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211121221311) 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, 2442267 + ... + 6810793.

It is an arithmetic number, because the mean of its divisors is an integer number (2273756572476).

Almost surely, 2^{20211121221310} is an apocalyptic number.

20211121221310 is a deficient number, since it is larger than the sum of its proper divisors (16168983938306).

20211121221310 is a wasteful number, since it uses less digits than its factorization.

20211121221310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831187.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 20211121221310 its reverse (1312212111202), we get a palindrome (21523333332512).

The spelling of 20211121221310 in words is "twenty trillion, two hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, three hundred ten".