121210102001011 has 4 divisors (see below), whose sum is σ = 121210660859392. Its totient is φ = 121209543142632.

The previous prime is 121210102000993. The next prime is 121210102001077. The reversal of 121210102001011 is 110100201012121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121210102001011 - 2³⁹ = 120660346187123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121210102000982 and 121210102001000.

It is not an unprimeable number, because it can be changed into a prime (121210102001081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279103731 + ... + 279537676.

It is an arithmetic number, because the mean of its divisors is an integer number (30302665214848).

Almost surely, 2^{121210102001011} is an apocalyptic number.

121210102001011 is a deficient number, since it is larger than the sum of its proper divisors (558858381).

121210102001011 is an equidigital number, since it uses as much as digits as its factorization.

121210102001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558858380.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121210102001011 its reverse (110100201012121), we get a palindrome (231310303013132).

The spelling of 121210102001011 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred two million, one thousand, eleven".