120021021151 has 2 divisors, whose sum is σ = 120021021152. Its totient is φ = 120021021150.

The previous prime is 120021021137. The next prime is 120021021167. The reversal of 120021021151 is 151120120021.

It is an a-pointer prime, because the next prime (120021021167) can be obtained adding 120021021151 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120021021151 - 2¹⁹ = 120020496863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120021021191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010510575 + 60010510576.

It is an arithmetic number, because the mean of its divisors is an integer number (60010510576).

Almost surely, 2^120021021151 is an apocalyptic number.

120021021151 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021021151 is an equidigital number, since it uses as much as digits as its factorization.

120021021151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 120021021151 its reverse (151120120021), we get a palindrome (271141141172).

The spelling of 120021021151 in words is "one hundred twenty billion, twenty-one million, twenty-one thousand, one hundred fifty-one".