1822220020187 has 4 divisors (see below), whose sum is σ = 2082537165936. Its totient is φ = 1561902874440.

The previous prime is 1822220020171. The next prime is 1822220020241. The reversal of 1822220020187 is 7810200222281.

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 1822220020187 - 2⁴ = 1822220020171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1822220020147) 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, 130158572864 + ... + 130158572877.

It is an arithmetic number, because the mean of its divisors is an integer number (520634291484).

Almost surely, 2^{1822220020187} is an apocalyptic number.

1822220020187 is a deficient number, since it is larger than the sum of its proper divisors (260317145749).

1822220020187 is an equidigital number, since it uses as much as digits as its factorization.

1822220020187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260317145748.

The product of its (nonzero) digits is 14336, while the sum is 35.

The spelling of 1822220020187 in words is "one trillion, eight hundred twenty-two billion, two hundred twenty million, twenty thousand, one hundred eighty-seven".