1021013010 has 48 divisors (see below), whose sum is σ = 2770058304. Its totient is φ = 260431776.

The previous prime is 1021013009. The next prime is 1021013017. The reversal of 1021013010 is 103101201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1021012983 and 1021013001.

It is not an unprimeable number, because it can be changed into a prime (1021013017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244552 + ... + 248691.

It is an arithmetic number, because the mean of its divisors is an integer number (57709548).

Almost surely, 2^1021013010 is an apocalyptic number.

1021013010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021013010 is an abundant number, since it is smaller than the sum of its proper divisors (1749045294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021013010 is a wasteful number, since it uses less digits than its factorization.

1021013010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493279 (or 493276 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1021013010 is about 31953.2941963736. The cubic root of 1021013010 is about 1006.9558407628.

Adding to 1021013010 its reverse (103101201), we get a palindrome (1124114211).

It can be divided in two parts, 102101 and 3010, that added together give a triangular number (105111 = T₄₅₈).

The spelling of 1021013010 in words is "one billion, twenty-one million, thirteen thousand, ten".