2102122122121 has 8 divisors (see below), whose sum is σ = 2403252872064. Its totient is φ = 1801198269600.

The previous prime is 2102122122103. The next prime is 2102122122179. The reversal of 2102122122121 is 1212212212012.

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 2102122122121 - 2⁷ = 2102122121993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102122122101) 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, 51702580 + ... + 51743221.

It is an arithmetic number, because the mean of its divisors is an integer number (300406609008).

Almost surely, 2^{2102122122121} is an apocalyptic number.

It is an amenable number.

2102122122121 is a deficient number, since it is larger than the sum of its proper divisors (301130749943).

2102122122121 is a wasteful number, since it uses less digits than its factorization.

2102122122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103448711.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2102122122121 its reverse (1212212212012), we get a palindrome (3314334334133).

The spelling of 2102122122121 in words is "two trillion, one hundred two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".