121010101010121 has 32 divisors (see below), whose sum is σ = 164758408081920. Its totient is φ = 78983885251584.

The previous prime is 121010101010083. The next prime is 121010101010173.

121010101010121 is nontrivially palindromic in base 10.

121010101010121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a de Polignac number, because none of the positive numbers 2^k-121010101010121 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 121010101010097 and 121010101010106.

It is not an unprimeable number, because it can be changed into a prime (121010101010021) 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, 761186640 + ... + 761345598.

It is an arithmetic number, because the mean of its divisors is an integer number (5148700252560).

Almost surely, 2^{121010101010121} is an apocalyptic number.

It is an amenable number.

121010101010121 is a deficient number, since it is larger than the sum of its proper divisors (43748307071799).

121010101010121 is a wasteful number, since it uses less digits than its factorization.

121010101010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184545.

The product of its (nonzero) digits is 4, while the sum is 12.

It can be divided in two parts, 12101010 and 1010121, that added together give a palindrome (13111131).

The spelling of 121010101010121 in words is "one hundred twenty-one trillion, ten billion, one hundred one million, ten thousand, one hundred twenty-one".