102121122213 has 24 divisors (see below), whose sum is σ = 161139590976. Its totient is φ = 61806412800.

The previous prime is 102121122209. The next prime is 102121122223. The reversal of 102121122213 is 312221121201.

It is not a de Polignac number, because 102121122213 - 2² = 102121122209 is a prime.

It is a super-3 number, since 3×102121122213³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121122223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637468 + ... + 781413.

It is an arithmetic number, because the mean of its divisors is an integer number (6714149624).

Almost surely, 2^102121122213 is an apocalyptic number.

It is an amenable number.

102121122213 is a deficient number, since it is larger than the sum of its proper divisors (59018468763).

102121122213 is a wasteful number, since it uses less digits than its factorization.

102121122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419625 (or 1419622 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 102121122213 its reverse (312221121201), we get a palindrome (414342243414).

The spelling of 102121122213 in words is "one hundred two billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred thirteen".