1255440122051 has 8 divisors (see below), whose sum is σ = 1262473321200. Its totient is φ = 1248407989920.

The previous prime is 1255440122029. The next prime is 1255440122063. The reversal of 1255440122051 is 1502210445521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255440122051 - 2²² = 1255435927747 is a prime.

It is a super-2 number, since 2×1255440122051² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1255440121999 and 1255440122017.

It is not an unprimeable number, because it can be changed into a prime (1255440122351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154365 + ... + 2674353.

It is an arithmetic number, because the mean of its divisors is an integer number (157809165150).

Almost surely, 2^{1255440122051} is an apocalyptic number.

1255440122051 is a deficient number, since it is larger than the sum of its proper divisors (7033199149).

1255440122051 is a wasteful number, since it uses less digits than its factorization.

1255440122051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533509.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 1255440122051 its reverse (1502210445521), we get a palindrome (2757650567572).

The spelling of 1255440122051 in words is "one trillion, two hundred fifty-five billion, four hundred forty million, one hundred twenty-two thousand, fifty-one".