2121021213011 has 8 divisors (see below), whose sum is σ = 2125492393440. Its totient is φ = 2116552785408.

The previous prime is 2121021212953. The next prime is 2121021213023. The reversal of 2121021213011 is 1103121201212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121021213011 - 2²² = 2121017018707 is a prime.

It is a super-2 number, since 2×2121021213011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121021213041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858050 + ... + 2231208.

It is an arithmetic number, because the mean of its divisors is an integer number (265686549180).

Almost surely, 2^{2121021213011} is an apocalyptic number.

2121021213011 is a deficient number, since it is larger than the sum of its proper divisors (4471180429).

2121021213011 is a wasteful number, since it uses less digits than its factorization.

2121021213011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376413.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2121021213011 its reverse (1103121201212), we get a palindrome (3224142414223).

The spelling of 2121021213011 in words is "two trillion, one hundred twenty-one billion, twenty-one million, two hundred thirteen thousand, eleven".