1021285213 has 8 divisors (see below), whose sum is σ = 1105606656. Its totient is φ = 937786800.

The previous prime is 1021285151. The next prime is 1021285247. The reversal of 1021285213 is 3125821201.

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 1021285213 - 2²⁵ = 987730781 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 (1021285253) 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, 203173 + ... + 208138.

It is an arithmetic number, because the mean of its divisors is an integer number (138200832).

Almost surely, 2^1021285213 is an apocalyptic number.

1021285213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1021285213 is a deficient number, since it is larger than the sum of its proper divisors (84321443).

1021285213 is a wasteful number, since it uses less digits than its factorization.

1021285213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411515.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1021285213 is about 31957.5533012150. The cubic root of 1021285213 is about 1007.0453179270.

The spelling of 1021285213 in words is "one billion, twenty-one million, two hundred eighty-five thousand, two hundred thirteen".