2153432003021 has 16 divisors (see below), whose sum is σ = 2381568095088. Its totient is φ = 1934464512000.

The previous prime is 2153432003017. The next prime is 2153432003027. The reversal of 2153432003021 is 1203002343512.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 81198121 + 2153350804900 = 9011^2 + 1467430^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153432003021 - 2² = 2153432003017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153432003027) 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, 4823936 + ... + 5251401.

It is an arithmetic number, because the mean of its divisors is an integer number (148848005943).

Almost surely, 2^{2153432003021} is an apocalyptic number.

It is an amenable number.

2153432003021 is a deficient number, since it is larger than the sum of its proper divisors (228136092067).

2153432003021 is a wasteful number, since it uses less digits than its factorization.

2153432003021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075792.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 2153432003021 its reverse (1203002343512), we get a palindrome (3356434346533).

The spelling of 2153432003021 in words is "two trillion, one hundred fifty-three billion, four hundred thirty-two million, three thousand, twenty-one".