1021113401 has 32 divisors (see below), whose sum is σ = 1309900800. Its totient is φ = 789037200.

The previous prime is 1021113397. The next prime is 1021113439. The reversal of 1021113401 is 1043111201.

It is not a de Polignac number, because 1021113401 - 2² = 1021113397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021113001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478106 + ... + 480236.

It is an arithmetic number, because the mean of its divisors is an integer number (40934400).

Almost surely, 2^1021113401 is an apocalyptic number.

1021113401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021113401 is a deficient number, since it is larger than the sum of its proper divisors (288787399).

1021113401 is a wasteful number, since it uses less digits than its factorization.

1021113401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290 (or 2276 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1021113401 is about 31954.8650599561. The cubic root of 1021113401 is about 1006.9888426246.

Adding to 1021113401 its reverse (1043111201), we get a palindrome (2064224602).

The spelling of 1021113401 in words is "one billion, twenty-one million, one hundred thirteen thousand, four hundred one".