22212121001022 has 48 divisors (see below), whose sum is σ = 50044707777792. Its totient is φ = 7383865777560.

The previous prime is 22212121000991. The next prime is 22212121001041. The reversal of 22212121001022 is 22010012121222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22212121000986 and 22212121001004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62088604 + ... + 62445327.

It is an arithmetic number, because the mean of its divisors is an integer number (1042598078704).

Almost surely, 2^{22212121001022} is an apocalyptic number.

22212121001022 is an abundant number, since it is smaller than the sum of its proper divisors (27832586776770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22212121001022 is a wasteful number, since it uses less digits than its factorization.

22212121001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124534315 (or 124534303 counting only the distinct ones).

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

Adding to 22212121001022 its reverse (22010012121222), we get a palindrome (44222133122244).

The spelling of 22212121001022 in words is "twenty-two trillion, two hundred twelve billion, one hundred twenty-one million, one thousand, twenty-two".