22222122102121 has 4 divisors (see below), whose sum is σ = 22222142555392. Its totient is φ = 22222101648852.

The previous prime is 22222122102109. The next prime is 22222122102287. The reversal of 22222122102121 is 12120122122222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22222122102121 - 2¹³ = 22222122093929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22222122102092 and 22222122102101.

It is not an unprimeable number, because it can be changed into a prime (22222122192121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8499705 + ... + 10802278.

It is an arithmetic number, because the mean of its divisors is an integer number (5555535638848).

Almost surely, 2^{22222122102121} is an apocalyptic number.

It is an amenable number.

22222122102121 is a deficient number, since it is larger than the sum of its proper divisors (20453271).

22222122102121 is a wasteful number, since it uses less digits than its factorization.

22222122102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20453270.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22222122102121 its reverse (12120122122222), we get a palindrome (34342244224343).

The spelling of 22222122102121 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred two thousand, one hundred twenty-one".