2121001110202 has 64 divisors (see below), whose sum is σ = 3667575985920. Its totient is φ = 912277707264.

The previous prime is 2121001110199. The next prime is 2121001110203. The reversal of 2121001110202 is 2020111001212.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (2121001110203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10104574 + ... + 10312342.

It is an arithmetic number, because the mean of its divisors is an integer number (57305874780).

Almost surely, 2^{2121001110202} is an apocalyptic number.

2121001110202 is a deficient number, since it is larger than the sum of its proper divisors (1546574875718).

2121001110202 is a wasteful number, since it uses less digits than its factorization.

2121001110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208247.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2121001110202 its reverse (2020111001212), we get a palindrome (4141112111414).

The spelling of 2121001110202 in words is "two trillion, one hundred twenty-one billion, one million, one hundred ten thousand, two hundred two".