121003213011 has 4 divisors (see below), whose sum is σ = 161337617352. Its totient is φ = 80668808672.

The previous prime is 121003212997. The next prime is 121003213027. The reversal of 121003213011 is 110312300121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110312300121 = 3 ⋅36770766707.

It is a cyclic number.

It is not a de Polignac number, because 121003213011 - 2²⁹ = 120466342099 is a prime.

It is a super-2 number, since 2×121003213011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121003213711) 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, 20167202166 + ... + 20167202171.

It is an arithmetic number, because the mean of its divisors is an integer number (40334404338).

Almost surely, 2^121003213011 is an apocalyptic number.

121003213011 is a deficient number, since it is larger than the sum of its proper divisors (40334404341).

121003213011 is an equidigital number, since it uses as much as digits as its factorization.

121003213011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40334404340.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121003213011 its reverse (110312300121), we get a palindrome (231315513132).

The spelling of 121003213011 in words is "one hundred twenty-one billion, three million, two hundred thirteen thousand, eleven".