22012020010221 has 16 divisors (see below), whose sum is σ = 31417691366400. Its totient is φ = 13666695740208.

The previous prime is 22012020010219. The next prime is 22012020010247. The reversal of 22012020010221 is 12201002021022.

It is not a de Polignac number, because 22012020010221 - 2¹ = 22012020010219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22012020010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012020012221) 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, 3272672821 + ... + 3272679546.

It is an arithmetic number, because the mean of its divisors is an integer number (1963605710400).

Almost surely, 2^{22012020010221} is an apocalyptic number.

It is an amenable number.

22012020010221 is a deficient number, since it is larger than the sum of its proper divisors (9405671356179).

22012020010221 is a wasteful number, since it uses less digits than its factorization.

22012020010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6545352448.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22012020010221 its reverse (12201002021022), we get a palindrome (34213022031243).

The spelling of 22012020010221 in words is "twenty-two trillion, twelve billion, twenty million, ten thousand, two hundred twenty-one".