2131222019 has 2 divisors, whose sum is σ = 2131222020. Its totient is φ = 2131222018.

The previous prime is 2131221997. The next prime is 2131222031. The reversal of 2131222019 is 9102221312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131222019 - 2¹⁶ = 2131156483 is a prime.

It is a super-2 number, since 2×2131222019² = 9084214588540872722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131221985 and 2131222003.

It is not a weakly prime, because it can be changed into another prime (2131222099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065611009 + 1065611010.

It is an arithmetic number, because the mean of its divisors is an integer number (1065611010).

Almost surely, 2^2131222019 is an apocalyptic number.

2131222019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131222019 is an equidigital number, since it uses as much as digits as its factorization.

2131222019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2131222019 is about 46165.1602293331. The cubic root of 2131222019 is about 1286.8943618873.

The spelling of 2131222019 in words is "two billion, one hundred thirty-one million, two hundred twenty-two thousand, nineteen".