2121222220022 has 16 divisors (see below), whose sum is σ = 3350344109760. Its totient is φ = 1004475712392.

The previous prime is 2121222220001. The next prime is 2121222220069. The reversal of 2121222220022 is 2200222221212.

It is a junction number, because it is equal to n+sod(n) for n = 2121222219976 and 2121222220003.

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, 8592248 + ... + 8835675.

It is an arithmetic number, because the mean of its divisors is an integer number (209396506860).

Almost surely, 2^{2121222220022} is an apocalyptic number.

2121222220022 is a deficient number, since it is larger than the sum of its proper divisors (1229121889738).

2121222220022 is a wasteful number, since it uses less digits than its factorization.

2121222220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17431147.

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

Adding to 2121222220022 its reverse (2200222221212), we get a palindrome (4321444441234).

The spelling of 2121222220022 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, twenty-two".