2121062215422 has 32 divisors (see below), whose sum is σ = 4255373232000. Its totient is φ = 704813586848.

The previous prime is 2121062215409. The next prime is 2121062215423. The reversal of 2121062215422 is 2245122601212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121062215422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121062215423) 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, 8684329 + ... + 8925227.

It is an arithmetic number, because the mean of its divisors is an integer number (132980413500).

Almost surely, 2^{2121062215422} is an apocalyptic number.

2121062215422 is an abundant number, since it is smaller than the sum of its proper divisors (2134311016578).

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

2121062215422 is a wasteful number, since it uses less digits than its factorization.

2121062215422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245480.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 2121062215422 its reverse (2245122601212), we get a palindrome (4366184816634).

The spelling of 2121062215422 in words is "two trillion, one hundred twenty-one billion, sixty-two million, two hundred fifteen thousand, four hundred twenty-two".