22222121012101 has 8 divisors (see below), whose sum is σ = 22285377566424. Its totient is φ = 22158948188160.

The previous prime is 22222121012041. The next prime is 22222121012111. The reversal of 22222121012101 is 10121012122222.

It can be written as a sum of positive squares in 4 ways, for example, as 338577351876 + 21883543660225 = 581874^2 + 4677985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22222121012101 - 2³¹ = 22219973528453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222121012111) 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, 20401020 + ... + 21462661.

It is an arithmetic number, because the mean of its divisors is an integer number (2785672195803).

Almost surely, 2^{22222121012101} is an apocalyptic number.

It is an amenable number.

22222121012101 is a deficient number, since it is larger than the sum of its proper divisors (63256554323).

22222121012101 is an equidigital number, since it uses as much as digits as its factorization.

22222121012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41865191.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22222121012101 its reverse (10121012122222), we get a palindrome (32343133134323).

The spelling of 22222121012101 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, twelve thousand, one hundred one".