2101202211121 has 16 divisors (see below), whose sum is σ = 2383525448640. Its totient is φ = 1836257515200.

The previous prime is 2101202211091. The next prime is 2101202211137. The reversal of 2101202211121 is 1211122021012.

It is a cyclic number.

It is not a de Polignac number, because 2101202211121 - 2¹⁹ = 2101201686833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101202211095 and 2101202211104.

It is not an unprimeable number, because it can be changed into a prime (2101202211151) 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, 2480155 + ... + 3217696.

It is an arithmetic number, because the mean of its divisors is an integer number (148970340540).

Almost surely, 2^{2101202211121} is an apocalyptic number.

It is an amenable number.

2101202211121 is a deficient number, since it is larger than the sum of its proper divisors (282323237519).

2101202211121 is a wasteful number, since it uses less digits than its factorization.

2101202211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5699376.

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

Adding to 2101202211121 its reverse (1211122021012), we get a palindrome (3312324232133).

The spelling of 2101202211121 in words is "two trillion, one hundred one billion, two hundred two million, two hundred eleven thousand, one hundred twenty-one".