1201352251 has 12 divisors (see below), whose sum is σ = 1321784856. Its totient is φ = 1091071520.

The previous prime is 1201352227. The next prime is 1201352267. The reversal of 1201352251 is 1522531021.

It is not a de Polignac number, because 1201352251 - 2²³ = 1192963643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201352051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136455 + ... + 144991.

It is an arithmetic number, because the mean of its divisors is an integer number (110148738).

Almost surely, 2^1201352251 is an apocalyptic number.

1201352251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201352251 is a deficient number, since it is larger than the sum of its proper divisors (120432605).

1201352251 is a wasteful number, since it uses less digits than its factorization.

1201352251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9722 (or 9711 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1201352251 is about 34660.5287178370. The cubic root of 1201352251 is about 1063.0575807615.

Adding to 1201352251 its reverse (1522531021), we get a palindrome (2723883272).

The spelling of 1201352251 in words is "one billion, two hundred one million, three hundred fifty-two thousand, two hundred fifty-one".