22211402121 has 12 divisors (see below), whose sum is σ = 33271401072. Its totient is φ = 14807601252.

The previous prime is 22211402113. The next prime is 22211402123. The reversal of 22211402121 is 12120411222.

It is not a de Polignac number, because 22211402121 - 2³ = 22211402113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22211402094 and 22211402103.

It is not an unprimeable number, because it can be changed into a prime (22211402123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45702231 + ... + 45702716.

It is an arithmetic number, because the mean of its divisors is an integer number (2772616756).

Almost surely, 2^22211402121 is an apocalyptic number.

It is an amenable number.

22211402121 is a deficient number, since it is larger than the sum of its proper divisors (11059998951).

22211402121 is an frugal number, since it uses more digits than its factorization.

22211402121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91404962 (or 91404950 counting only the distinct ones).

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

Adding to 22211402121 its reverse (12120411222), we get a palindrome (34331813343).

The spelling of 22211402121 in words is "twenty-two billion, two hundred eleven million, four hundred two thousand, one hundred twenty-one".