2121210001222 has 32 divisors (see below), whose sum is σ = 3439703685600. Its totient is φ = 975268363008.

The previous prime is 2121210001213. The next prime is 2121210001223. The reversal of 2121210001222 is 2221000121212.

It is a happy number.

It is a super-3 number, since 3×2121210001222³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121210001196 and 2121210001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121210001223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115720554 + ... + 115738882.

It is an arithmetic number, because the mean of its divisors is an integer number (107490740175).

Almost surely, 2^{2121210001222} is an apocalyptic number.

2121210001222 is a deficient number, since it is larger than the sum of its proper divisors (1318493684378).

2121210001222 is a wasteful number, since it uses less digits than its factorization.

2121210001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35160.

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

Adding to 2121210001222 its reverse (2221000121212), we get a palindrome (4342210122434).

The spelling of 2121210001222 in words is "two trillion, one hundred twenty-one billion, two hundred ten million, one thousand, two hundred twenty-two".