2142203032021 has 16 divisors (see below), whose sum is σ = 2333148133680. Its totient is φ = 1954999664640.

The previous prime is 2142203032007. The next prime is 2142203032027. The reversal of 2142203032021 is 1202303022412.

It can be written as a sum of positive squares in 8 ways, for example, as 698961209521 + 1443241822500 = 836039^2 + 1201350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142203032021 - 2⁵ = 2142203031989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2142203031983 and 2142203032001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142203032027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11851701 + ... + 12031093.

It is an arithmetic number, because the mean of its divisors is an integer number (145821758355).

Almost surely, 2^{2142203032021} is an apocalyptic number.

It is an amenable number.

2142203032021 is a deficient number, since it is larger than the sum of its proper divisors (190945101659).

2142203032021 is a wasteful number, since it uses less digits than its factorization.

2142203032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189816.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 2142203032021 its reverse (1202303022412), we get a palindrome (3344506054433).

The spelling of 2142203032021 in words is "two trillion, one hundred forty-two billion, two hundred three million, thirty-two thousand, twenty-one".