2102210012121 has 8 divisors (see below), whose sum is σ = 2815515951360. Its totient is φ = 1395188707152.

The previous prime is 2102210012113. The next prime is 2102210012131. The reversal of 2102210012121 is 1212100122012.

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

It is not a de Polignac number, because 2102210012121 - 2³ = 2102210012113 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102210012121.

It is not an unprimeable number, because it can be changed into a prime (2102210012131) 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, 1571157786 + ... + 1571159123.

It is an arithmetic number, because the mean of its divisors is an integer number (351939493920).

Almost surely, 2^{2102210012121} is an apocalyptic number.

It is an amenable number.

2102210012121 is a deficient number, since it is larger than the sum of its proper divisors (713305939239).

2102210012121 is a wasteful number, since it uses less digits than its factorization.

2102210012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142317135.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2102210012121 its reverse (1212100122012), we get a palindrome (3314310134133).

The spelling of 2102210012121 in words is "two trillion, one hundred two billion, two hundred ten million, twelve thousand, one hundred twenty-one".