20250120213 has 6 divisors (see below), whose sum is σ = 29250173654. Its totient is φ = 13500080136.

The previous prime is 20250120193. The next prime is 20250120217. The reversal of 20250120213 is 31202105202.

It can be written as a sum of positive squares in only one way, i.e., 18559430289 + 1690689924 = 136233^2 + 41118^2 .

It is not a de Polignac number, because 20250120213 - 2¹⁶ = 20250054677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20250120217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1125006670 + ... + 1125006687.

Almost surely, 2^20250120213 is an apocalyptic number.

It is an amenable number.

20250120213 is a deficient number, since it is larger than the sum of its proper divisors (9000053441).

20250120213 is a wasteful number, since it uses less digits than its factorization.

20250120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250013363 (or 2250013360 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 20250120213 its reverse (31202105202), we get a palindrome (51452225415).

The spelling of 20250120213 in words is "twenty billion, two hundred fifty million, one hundred twenty thousand, two hundred thirteen".