1012250421 has 48 divisors (see below), whose sum is σ = 1837914624. Its totient is φ = 522554112.

The previous prime is 1012250417. The next prime is 1012250467. The reversal of 1012250421 is 1240522101.

It is not a de Polignac number, because 1012250421 - 2² = 1012250417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012250394 and 1012250403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012250221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25345 + ... + 51641.

It is an arithmetic number, because the mean of its divisors is an integer number (38289888).

Almost surely, 2^1012250421 is an apocalyptic number.

It is an amenable number.

1012250421 is a deficient number, since it is larger than the sum of its proper divisors (825664203).

1012250421 is a wasteful number, since it uses less digits than its factorization.

1012250421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26370 (or 26367 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1012250421 is about 31815.8831560590. The cubic root of 1012250421 is about 1004.0669114758.

Adding to 1012250421 its reverse (1240522101), we get a palindrome (2252772522).

It can be divided in two parts, 101 and 2250421, that added together give a palindrome (2250522).

The spelling of 1012250421 in words is "one billion, twelve million, two hundred fifty thousand, four hundred twenty-one".