2169932240021 has 12 divisors (see below), whose sum is σ = 2718376653132. Its totient is φ = 1716869464128.

The previous prime is 2169932240009. The next prime is 2169932240039. The reversal of 2169932240021 is 1200422399612.

It can be written as a sum of positive squares in 2 ways, for example, as 1092672996100 + 1077259243921 = 1045310^2 + 1037911^2 .

It is not a de Polignac number, because 2169932240021 - 2⁶ = 2169932239957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2169932240051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1703242880 + ... + 1703244153.

It is an arithmetic number, because the mean of its divisors is an integer number (226531387761).

Almost surely, 2^{2169932240021} is an apocalyptic number.

It is an amenable number.

2169932240021 is a deficient number, since it is larger than the sum of its proper divisors (548444413111).

2169932240021 is a wasteful number, since it uses less digits than its factorization.

2169932240021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406487060 (or 3406487053 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 2169932240021 in words is "two trillion, one hundred sixty-nine billion, nine hundred thirty-two million, two hundred forty thousand, twenty-one".