2120121212202 has 48 divisors (see below), whose sum is σ = 5526130484160. Its totient is φ = 573867395136.

The previous prime is 2120121212201. The next prime is 2120121212213. The reversal of 2120121212202 is 2022121210212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2120121212201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 442796523 + ... + 442801310.

It is an arithmetic number, because the mean of its divisors is an integer number (115127718420).

Almost surely, 2^{2120121212202} is an apocalyptic number.

2120121212202 is an abundant number, since it is smaller than the sum of its proper divisors (3406009271958).

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

2120121212202 is a wasteful number, since it uses less digits than its factorization.

2120121212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885597867 (or 885597864 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2120121212202 its reverse (2022121210212), we get a palindrome (4142242422414).

The spelling of 2120121212202 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, two hundred two".