2102142121 has 8 divisors (see below), whose sum is σ = 2227438400. Its totient is φ = 1978311600.

The previous prime is 2102142103. The next prime is 2102142131. The reversal of 2102142121 is 1212412012.

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 2102142121 - 2²⁷ = 1967924393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102142095 and 2102142104.

It is not an unprimeable number, because it can be changed into a prime (2102142131) 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, 363486 + ... + 369223.

It is an arithmetic number, because the mean of its divisors is an integer number (278429800).

Almost surely, 2^2102142121 is an apocalyptic number.

It is an amenable number.

2102142121 is a deficient number, since it is larger than the sum of its proper divisors (125296279).

2102142121 is a wasteful number, since it uses less digits than its factorization.

2102142121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732879.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2102142121 is about 45849.1234485459. The cubic root of 2102142121 is about 1281.0144385310.

Adding to 2102142121 its reverse (1212412012), we get a palindrome (3314554133).

The spelling of 2102142121 in words is "two billion, one hundred two million, one hundred forty-two thousand, one hundred twenty-one".