101111220019 has 4 divisors (see below), whose sum is σ = 102391108960. Its totient is φ = 99831331080.

The previous prime is 101111220013. The next prime is 101111220031. The reversal of 101111220019 is 910022111101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101111220019 - 2¹⁵ = 101111187251 is a prime.

It is a super-2 number, since 2×101111220019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101111219978 and 101111220005.

It is not an unprimeable number, because it can be changed into a prime (101111220013) 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, 639944352 + ... + 639944509.

It is an arithmetic number, because the mean of its divisors is an integer number (25597777240).

Almost surely, 2^101111220019 is an apocalyptic number.

101111220019 is a deficient number, since it is larger than the sum of its proper divisors (1279888941).

101111220019 is an equidigital number, since it uses as much as digits as its factorization.

101111220019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279888940.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 101111220019 in words is "one hundred one billion, one hundred eleven million, two hundred twenty thousand, nineteen".