151221701201 has 2 divisors, whose sum is σ = 151221701202. Its totient is φ = 151221701200.

The previous prime is 151221701177. The next prime is 151221701231. The reversal of 151221701201 is 102107122151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150407454976 + 814246225 = 387824^2 + 28535^2 .

It is a cyclic number.

It is not a de Polignac number, because 151221701201 - 2²² = 151217506897 is a prime.

It is not a weakly prime, because it can be changed into another prime (151221701231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75610850600 + 75610850601.

It is an arithmetic number, because the mean of its divisors is an integer number (75610850601).

Almost surely, 2^151221701201 is an apocalyptic number.

It is an amenable number.

151221701201 is a deficient number, since it is larger than the sum of its proper divisors (1).

151221701201 is an equidigital number, since it uses as much as digits as its factorization.

151221701201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 151221701201 its reverse (102107122151), we get a palindrome (253328823352).

The spelling of 151221701201 in words is "one hundred fifty-one billion, two hundred twenty-one million, seven hundred one thousand, two hundred one".