2121022211101 has 16 divisors (see below), whose sum is σ = 2162139033600. Its totient is φ = 2080278456048.

The previous prime is 2121022211041. The next prime is 2121022211167. The reversal of 2121022211101 is 1011122201212.

It is a cyclic number.

It is not a de Polignac number, because 2121022211101 - 2⁹ = 2121022210589 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 (2121022218101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20516326 + ... + 20619448.

It is an arithmetic number, because the mean of its divisors is an integer number (135133689600).

Almost surely, 2^{2121022211101} is an apocalyptic number.

It is an amenable number.

2121022211101 is a deficient number, since it is larger than the sum of its proper divisors (41116822499).

2121022211101 is a wasteful number, since it uses less digits than its factorization.

2121022211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104928.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121022211101 its reverse (1011122201212), we get a palindrome (3132144412313).

The spelling of 2121022211101 in words is "two trillion, one hundred twenty-one billion, twenty-two million, two hundred eleven thousand, one hundred one".