2121220121102 has 8 divisors (see below), whose sum is σ = 3199605769800. Its totient is φ = 1054684864504.

The previous prime is 2121220121071. The next prime is 2121220121159. The reversal of 2121220121102 is 2011210221212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2962597577 + ... + 2962598292.

It is an arithmetic number, because the mean of its divisors is an integer number (399950721225).

Almost surely, 2^{2121220121102} is an apocalyptic number.

2121220121102 is a deficient number, since it is larger than the sum of its proper divisors (1078385648698).

2121220121102 is a wasteful number, since it uses less digits than its factorization.

2121220121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5925196050.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121220121102 its reverse (2011210221212), we get a palindrome (4132430342314).

The spelling of 2121220121102 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred two".