1021256461223 has 8 divisors (see below), whose sum is σ = 1073250035088. Its totient is φ = 970546679424.

The previous prime is 1021256461213. The next prime is 1021256461243. The reversal of 1021256461223 is 3221646521201.

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 1021256461223 - 2³² = 1016961493927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021256461213) 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, 320946386 + ... + 320949567.

It is an arithmetic number, because the mean of its divisors is an integer number (134156254386).

Almost surely, 2^{1021256461223} is an apocalyptic number.

1021256461223 is a deficient number, since it is larger than the sum of its proper divisors (51993573865).

1021256461223 is an equidigital number, since it uses as much as digits as its factorization.

1021256461223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641896033.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 1021256461223 in words is "one trillion, twenty-one billion, two hundred fifty-six million, four hundred sixty-one thousand, two hundred twenty-three".