120152121653 has 2 divisors, whose sum is σ = 120152121654. Its totient is φ = 120152121652.

The previous prime is 120152121589. The next prime is 120152121679. The reversal of 120152121653 is 356121251021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97143175684 + 23008945969 = 311678^2 + 151687^2 .

It is a cyclic number.

It is not a de Polignac number, because 120152121653 - 2⁶ = 120152121589 is a prime.

It is a super-2 number, since 2×120152121653² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120152121053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60076060826 + 60076060827.

It is an arithmetic number, because the mean of its divisors is an integer number (60076060827).

Almost surely, 2^120152121653 is an apocalyptic number.

It is an amenable number.

120152121653 is a deficient number, since it is larger than the sum of its proper divisors (1).

120152121653 is an equidigital number, since it uses as much as digits as its factorization.

120152121653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 120152121653 its reverse (356121251021), we get a palindrome (476273372674).

The spelling of 120152121653 in words is "one hundred twenty billion, one hundred fifty-two million, one hundred twenty-one thousand, six hundred fifty-three".