2121132011021 has 8 divisors (see below), whose sum is σ = 2122527939840. Its totient is φ = 2119736374912.

The previous prime is 2121132010997. The next prime is 2121132011023. The reversal of 2121132011021 is 1201102311212.

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 2121132011021 - 2⁶ = 2121132010957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121132011023) 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, 15502916 + ... + 15639138.

It is an arithmetic number, because the mean of its divisors is an integer number (265315992480).

Almost surely, 2^{2121132011021} is an apocalyptic number.

It is an amenable number.

2121132011021 is a deficient number, since it is larger than the sum of its proper divisors (1395928819).

2121132011021 is a wasteful number, since it uses less digits than its factorization.

2121132011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146355.

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

Adding to 2121132011021 its reverse (1201102311212), we get a palindrome (3322234322233).

The spelling of 2121132011021 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-two million, eleven thousand, twenty-one".