1301101021 has 12 divisors (see below), whose sum is σ = 1440443200. Its totient is φ = 1174294440.

The previous prime is 1301100991. The next prime is 1301101027. The reversal of 1301101021 is 1201011031.

It is not a de Polignac number, because 1301101021 - 2⁵ = 1301100989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1301100989 and 1301101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301101027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21861 + ... + 55498.

Almost surely, 2^1301101021 is an apocalyptic number.

1301101021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1301101021 is a deficient number, since it is larger than the sum of its proper divisors (139342179).

1301101021 is a wasteful number, since it uses less digits than its factorization.

1301101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77520 (or 77509 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1301101021 is about 36070.7779372722. Note that the first 3 decimals coincide. The cubic root of 1301101021 is about 1091.7009106002.

Adding to 1301101021 its reverse (1201011031), we get a palindrome (2502112052).

It can be divided in two parts, 13011010 and 21, that added together give a palindrome (13011031).

The spelling of 1301101021 in words is "one billion, three hundred one million, one hundred one thousand, twenty-one".