1212221010022 has 16 divisors (see below), whose sum is σ = 1985998694400. Its totient is φ = 550352796040.

The previous prime is 1212221009999. The next prime is 1212221010023. The reversal of 1212221010022 is 2200101222121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212221009978 and 1212221010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212221010023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32818822 + ... + 32855737.

It is an arithmetic number, because the mean of its divisors is an integer number (124124918400).

Almost surely, 2^{1212221010022} is an apocalyptic number.

1212221010022 is a deficient number, since it is larger than the sum of its proper divisors (773777684378).

1212221010022 is a wasteful number, since it uses less digits than its factorization.

1212221010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65675411.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212221010022 its reverse (2200101222121), we get a palindrome (3412322232143).

The spelling of 1212221010022 in words is "one trillion, two hundred twelve billion, two hundred twenty-one million, ten thousand, twenty-two".