2019211201091 has 12 divisors (see below), whose sum is σ = 2356288064928. Its totient is φ = 1725292657872.

The previous prime is 2019211201081. The next prime is 2019211201093. The reversal of 2019211201091 is 1901021129102.

It is not a de Polignac number, because 2019211201091 - 2¹⁴ = 2019211184707 is a prime.

It is a super-2 number, since 2×2019211201091² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2019211201093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64981931 + ... + 65012996.

It is an arithmetic number, because the mean of its divisors is an integer number (196357338744).

Almost surely, 2^{2019211201091} is an apocalyptic number.

2019211201091 is a deficient number, since it is larger than the sum of its proper divisors (337076863837).

2019211201091 is a wasteful number, since it uses less digits than its factorization.

2019211201091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129995258 (or 129995251 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 2019211201091 in words is "two trillion, nineteen billion, two hundred eleven million, two hundred one thousand, ninety-one".