121011210001 has 16 divisors (see below), whose sum is σ = 133044912000. Its totient is φ = 109152403200.

The previous prime is 121011209993. The next prime is 121011210031. The reversal of 121011210001 is 100012110121.

It is a cyclic number.

It is not a de Polignac number, because 121011210001 - 2³ = 121011209993 is a prime.

It is a super-2 number, since 2×121011210001² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121011210001.

It is not an unprimeable number, because it can be changed into a prime (121011210031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804825 + ... + 943273.

It is an arithmetic number, because the mean of its divisors is an integer number (8315307000).

Almost surely, 2^121011210001 is an apocalyptic number.

121011210001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121011210001 is a deficient number, since it is larger than the sum of its proper divisors (12033701999).

121011210001 is a wasteful number, since it uses less digits than its factorization.

121011210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139080.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121011210001 its reverse (100012110121), we get a palindrome (221023320122).

It can be divided in two parts, 1210 and 11210001, that added together give a palindrome (11211211).

The spelling of 121011210001 in words is "one hundred twenty-one billion, eleven million, two hundred ten thousand, one".