20021233151 has 2 divisors, whose sum is σ = 20021233152. Its totient is φ = 20021233150.

The previous prime is 20021233073. The next prime is 20021233163. The reversal of 20021233151 is 15133212002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021233151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021223151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010616575 + 10010616576.

It is an arithmetic number, because the mean of its divisors is an integer number (10010616576).

Almost surely, 2^20021233151 is an apocalyptic number.

20021233151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021233151 is an equidigital number, since it uses as much as digits as its factorization.

20021233151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 20021233151 its reverse (15133212002), we get a palindrome (35154445153).

The spelling of 20021233151 in words is "twenty billion, twenty-one million, two hundred thirty-three thousand, one hundred fifty-one".