1021111130 has 32 divisors (see below), whose sum is σ = 1982960784. Its totient is φ = 376344576.

The previous prime is 1021111127. The next prime is 1021111159. The reversal of 1021111130 is 311111201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 220730449 + 800380681 = 14857^2 + 28291^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68204 + ... + 81816.

Almost surely, 2^1021111130 is an apocalyptic number.

1021111130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021111130 is a deficient number, since it is larger than the sum of its proper divisors (961849654).

1021111130 is a wasteful number, since it uses less digits than its factorization.

1021111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14210.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1021111130 is about 31954.8295254411. The cubic root of 1021111130 is about 1006.9880960953.

Adding to 1021111130 its reverse (311111201), we get a palindrome (1332222331).

The spelling of 1021111130 in words is "one billion, twenty-one million, one hundred eleven thousand, one hundred thirty".