121001013 has 32 divisors (see below), whose sum is σ = 205440000. Its totient is φ = 68951088.

The previous prime is 121000993. The next prime is 121001033. The reversal of 121001013 is 310100121.

It is an interprime number because it is at equal distance from previous prime (121000993) and next prime (121001033).

It is not a de Polignac number, because 121001013 - 2⁹ = 121000501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121000986 and 121001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001033) 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, 93670 + ... + 94952.

It is an arithmetic number, because the mean of its divisors is an integer number (6420000).

Almost surely, 2^121001013 is an apocalyptic number.

It is an amenable number.

121001013 is a deficient number, since it is larger than the sum of its proper divisors (84438987).

121001013 is a wasteful number, since it uses less digits than its factorization.

121001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 121001013 is about 11000.0460453582. The cubic root of 121001013 is about 494.6101245928.

Adding to 121001013 its reverse (310100121), we get a palindrome (431101134).

The spelling of 121001013 in words is "one hundred twenty-one million, one thousand, thirteen".