12210121101021 has 8 divisors (see below), whose sum is σ = 16291319912160. Its totient is φ = 8134501511952.

The previous prime is 12210121101007. The next prime is 12210121101023. The reversal of 12210121101021 is 12010112101221.

It is a happy number.

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

It is not a de Polignac number, because 12210121101021 - 2⁷ = 12210121100893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210121101023) 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, 1394800410 + ... + 1394809163.

It is an arithmetic number, because the mean of its divisors is an integer number (2036414989020).

Almost surely, 2^{12210121101021} is an apocalyptic number.

It is an amenable number.

12210121101021 is a deficient number, since it is larger than the sum of its proper divisors (4081198811139).

12210121101021 is a wasteful number, since it uses less digits than its factorization.

12210121101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789611035.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12210121101021 its reverse (12010112101221), we get a palindrome (24220233202242).

The spelling of 12210121101021 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, one hundred one thousand, twenty-one".