222121001022 has 16 divisors (see below), whose sum is σ = 447071570832. Its totient is φ = 73568738880.

The previous prime is 222121001017. The next prime is 222121001059. The reversal of 222121001022 is 220100121222.

It is a junction number, because it is equal to n+sod(n) for n = 222121000992 and 222121001010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117897679 + ... + 117899562.

It is an arithmetic number, because the mean of its divisors is an integer number (27941973177).

Almost surely, 2^222121001022 is an apocalyptic number.

222121001022 is an abundant number, since it is smaller than the sum of its proper divisors (224950569810).

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

222121001022 is a wasteful number, since it uses less digits than its factorization.

222121001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235797403.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222121001022 its reverse (220100121222), we get a palindrome (442221122244).

The spelling of 222121001022 in words is "two hundred twenty-two billion, one hundred twenty-one million, one thousand, twenty-two".