1021012030 has 16 divisors (see below), whose sum is σ = 1856019744. Its totient is φ = 404360800.

The previous prime is 1021011991. The next prime is 1021012033. The reversal of 1021012030 is 302101201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1021011998 and 1021012016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021012033) 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, 504442 + ... + 506461.

It is an arithmetic number, because the mean of its divisors is an integer number (116001234).

Almost surely, 2^1021012030 is an apocalyptic number.

1021012030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021012030 is a deficient number, since it is larger than the sum of its proper divisors (835007714).

1021012030 is a wasteful number, since it uses less digits than its factorization.

1021012030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011011.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1021012030 is about 31953.2788614878. The cubic root of 1021012030 is about 1006.9555185935.

Adding to 1021012030 its reverse (302101201), we get a palindrome (1323113231).

The spelling of 1021012030 in words is "one billion, twenty-one million, twelve thousand, thirty".