21142150219 has 2 divisors, whose sum is σ = 21142150220. Its totient is φ = 21142150218.

The previous prime is 21142150199. The next prime is 21142150277. The reversal of 21142150219 is 91205124112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21142150219 - 2⁵ = 21142150187 is a prime.

It is a super-2 number, since 2×21142150219² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21142150619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571075109 + 10571075110.

It is an arithmetic number, because the mean of its divisors is an integer number (10571075110).

Almost surely, 2^21142150219 is an apocalyptic number.

21142150219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21142150219 is an equidigital number, since it uses as much as digits as its factorization.

21142150219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 21142150219 in words is "twenty-one billion, one hundred forty-two million, one hundred fifty thousand, two hundred nineteen".