121222222022 has 16 divisors (see below), whose sum is σ = 198387019152. Its totient is φ = 55094514720.

The previous prime is 121222222019. The next prime is 121222222073. The reversal of 121222222022 is 220222222121.

It is a super-2 number, since 2×121222222022² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121222221985 and 121222222003.

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, 131333 + ... + 509600.

It is an arithmetic number, because the mean of its divisors is an integer number (12399188697).

Almost surely, 2^121222222022 is an apocalyptic number.

121222222022 is a deficient number, since it is larger than the sum of its proper divisors (77164797130).

121222222022 is a wasteful number, since it uses less digits than its factorization.

121222222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649543.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 121222222022 its reverse (220222222121), we get a palindrome (341444444143).

Subtracting 121222222022 from its reverse (220222222121), we obtain a palindrome (99000000099).

The spelling of 121222222022 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty-two".