20210222121213 has 16 divisors (see below), whose sum is σ = 27125447602176. Its totient is φ = 13384340966640.

The previous prime is 20210222121179. The next prime is 20210222121217. The reversal of 20210222121213 is 31212122201202.

It is not a de Polignac number, because 20210222121213 - 2¹² = 20210222117117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20210222121213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210222121217) 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, 11948473 + ... + 13534638.

It is an arithmetic number, because the mean of its divisors is an integer number (1695340475136).

Almost surely, 2^{20210222121213} is an apocalyptic number.

It is an amenable number.

20210222121213 is a deficient number, since it is larger than the sum of its proper divisors (6915225480963).

20210222121213 is a wasteful number, since it uses less digits than its factorization.

20210222121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25484864.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20210222121213 its reverse (31212122201202), we get a palindrome (51422344322415).

The spelling of 20210222121213 in words is "twenty trillion, two hundred ten billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred thirteen".