1021122730 has 32 divisors (see below), whose sum is σ = 1861833600. Its totient is φ = 403191360.

The previous prime is 1021122709. The next prime is 1021122761. The reversal of 1021122730 is 372211201.

It is a junction number, because it is equal to n+sod(n) for n = 1021122698 and 1021122707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258732 + ... + 262648.

It is an arithmetic number, because the mean of its divisors is an integer number (58182300).

Almost surely, 2^1021122730 is an apocalyptic number.

1021122730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021122730 is a deficient number, since it is larger than the sum of its proper divisors (840710870).

1021122730 is a wasteful number, since it uses less digits than its factorization.

1021122730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4254.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1021122730 is about 31955.0110311356. The cubic root of 1021122730 is about 1006.9919092675.

Adding to 1021122730 its reverse (372211201), we get a palindrome (1393333931).

The spelling of 1021122730 in words is "one billion, twenty-one million, one hundred twenty-two thousand, seven hundred thirty".