102100212121 has 8 divisors (see below), whose sum is σ = 103642317504. Its totient is φ = 100558642800.

The previous prime is 102100212119. The next prime is 102100212131. The reversal of 102100212121 is 121212001201.

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 102100212121 - 2¹ = 102100212119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102100212131) 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, 258396 + ... + 520546.

It is an arithmetic number, because the mean of its divisors is an integer number (12955289688).

Almost surely, 2^102100212121 is an apocalyptic number.

It is an amenable number.

102100212121 is a deficient number, since it is larger than the sum of its proper divisors (1542105383).

102100212121 is an equidigital number, since it uses as much as digits as its factorization.

102100212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268031.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102100212121 its reverse (121212001201), we get a palindrome (223312213322).

The spelling of 102100212121 in words is "one hundred two billion, one hundred million, two hundred twelve thousand, one hundred twenty-one".