2121010102 has 16 divisors (see below), whose sum is σ = 3208095072. Its totient is φ = 1051676800.

The previous prime is 2121010081. The next prime is 2121010123. The reversal of 2121010102 is 2010101212.

It is an interprime number because it is at equal distance from previous prime (2121010081) and next prime (2121010123).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131103 + ... + 146389.

It is an arithmetic number, because the mean of its divisors is an integer number (200505942).

Almost surely, 2^2121010102 is an apocalyptic number.

2121010102 is a deficient number, since it is larger than the sum of its proper divisors (1087084970).

2121010102 is a wasteful number, since it uses less digits than its factorization.

2121010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15863.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2121010102 is about 46054.4254333935. The cubic root of 2121010102 is about 1284.8356518907.

Adding to 2121010102 its reverse (2010101212), we get a palindrome (4131111314).

The spelling of 2121010102 in words is "two billion, one hundred twenty-one million, ten thousand, one hundred two".