101212121019 has 8 divisors (see below), whose sum is σ = 134953108992. Its totient is φ = 67472940200.

The previous prime is 101212120991. The next prime is 101212121029. The reversal of 101212121019 is 910121212101.

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 101212121019 - 2¹¹ = 101212118971 is a prime.

It is a super-2 number, since 2×101212121019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101212120986 and 101212121004.

It is not an unprimeable number, because it can be changed into a prime (101212121029) 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, 315207 + ... + 549344.

It is an arithmetic number, because the mean of its divisors is an integer number (16869138624).

Almost surely, 2^101212121019 is an apocalyptic number.

101212121019 is a deficient number, since it is larger than the sum of its proper divisors (33740987973).

101212121019 is an equidigital number, since it uses as much as digits as its factorization.

101212121019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903577.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 101212121019 in words is "one hundred one billion, two hundred twelve million, one hundred twenty-one thousand, nineteen".