1021252252055 has 24 divisors (see below), whose sum is σ = 1425691999152. Its totient is φ = 700234588032.

The previous prime is 1021252252001. The next prime is 1021252252061. The reversal of 1021252252055 is 5502522521201.

It is not a de Polignac number, because 1021252252055 - 2⁶ = 1021252251991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3258884 + ... + 3558486.

It is an arithmetic number, because the mean of its divisors is an integer number (59403833298).

Almost surely, 2^{1021252252055} is an apocalyptic number.

1021252252055 is a deficient number, since it is larger than the sum of its proper divisors (404439747097).

1021252252055 is a wasteful number, since it uses less digits than its factorization.

1021252252055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313535 (or 313528 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 1021252252055 its reverse (5502522521201), we get a palindrome (6523774773256).

The spelling of 1021252252055 in words is "one trillion, twenty-one billion, two hundred fifty-two million, two hundred fifty-two thousand, fifty-five".