1012231021 has 8 divisors (see below), whose sum is σ = 1029749760. Its totient is φ = 994861728.

The previous prime is 1012231019. The next prime is 1012231027. The reversal of 1012231021 is 1201322101.

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 1012231021 - 2¹ = 1012231019 is a prime.

It is a super-2 number, since 2×1012231021² = 2049223279749404882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012230992 and 1012231010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012231027) 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, 23656 + ... + 50833.

It is an arithmetic number, because the mean of its divisors is an integer number (128718720).

Almost surely, 2^1012231021 is an apocalyptic number.

It is an amenable number.

1012231021 is a deficient number, since it is larger than the sum of its proper divisors (17518739).

1012231021 is a wasteful number, since it uses less digits than its factorization.

1012231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74723.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012231021 is about 31815.5782754298. The cubic root of 1012231021 is about 1004.0604970477.

Adding to 1012231021 its reverse (1201322101), we get a palindrome (2213553122).

The spelling of 1012231021 in words is "one billion, twelve million, two hundred thirty-one thousand, twenty-one".