2122222010121 has 6 divisors (see below), whose sum is σ = 3065431792410. Its totient is φ = 1414814673408.

The previous prime is 2122222010119. The next prime is 2122222010231. The reversal of 2122222010121 is 1210102222212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2093415434496 + 28806575625 = 1446864^2 + 169725^2 .

It is not a de Polignac number, because 2122222010121 - 2¹ = 2122222010119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122222010094 and 2122222010103.

It is not an unprimeable number, because it can be changed into a prime (2122222017121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117901222776 + ... + 117901222793.

It is an arithmetic number, because the mean of its divisors is an integer number (510905298735).

Almost surely, 2^{2122222010121} is an apocalyptic number.

It is an amenable number.

2122222010121 is a deficient number, since it is larger than the sum of its proper divisors (943209782289).

2122222010121 is a wasteful number, since it uses less digits than its factorization.

2122222010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235802445575 (or 235802445572 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2122222010121 its reverse (1210102222212), we get a palindrome (3332324232333).

The spelling of 2122222010121 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two million, ten thousand, one hundred twenty-one".