1206272051 has 4 divisors (see below), whose sum is σ = 1226717400. Its totient is φ = 1185826704.

The previous prime is 1206272047. The next prime is 1206272141. The reversal of 1206272051 is 1502726021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1502726021 = 131 ⋅11471191.

It is a cyclic number.

It is not a de Polignac number, because 1206272051 - 2² = 1206272047 is a prime.

It is a super-2 number, since 2×1206272051² = 2910184522047493202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1206272051.

It is not an unprimeable number, because it can be changed into a prime (1206202051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10222586 + ... + 10222703.

It is an arithmetic number, because the mean of its divisors is an integer number (306679350).

Almost surely, 2^1206272051 is an apocalyptic number.

1206272051 is a deficient number, since it is larger than the sum of its proper divisors (20445349).

1206272051 is an equidigital number, since it uses as much as digits as its factorization.

1206272051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20445348.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1206272051 is about 34731.4274253161. The cubic root of 1206272051 is about 1064.5067553638.

Adding to 1206272051 its reverse (1502726021), we get a palindrome (2708998072).

The spelling of 1206272051 in words is "one billion, two hundred six million, two hundred seventy-two thousand, fifty-one".