102122121219 has 4 divisors (see below), whose sum is σ = 136162828296. Its totient is φ = 68081414144.

The previous prime is 102122121209. The next prime is 102122121263. The reversal of 102122121219 is 912121221201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912121221201 = 3 ⋅304040407067.

It is a cyclic number.

It is not a de Polignac number, because 102122121219 - 2¹⁵ = 102122088451 is a prime.

It is a super-2 number, since 2×102122121219² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102122121209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17020353534 + ... + 17020353539.

It is an arithmetic number, because the mean of its divisors is an integer number (34040707074).

Almost surely, 2^102122121219 is an apocalyptic number.

102122121219 is a deficient number, since it is larger than the sum of its proper divisors (34040707077).

102122121219 is an equidigital number, since it uses as much as digits as its factorization.

102122121219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34040707076.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 102122121219 in words is "one hundred two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred nineteen".