101210199947 has 2 divisors, whose sum is σ = 101210199948. Its totient is φ = 101210199946.

The previous prime is 101210199943. The next prime is 101210199949. The reversal of 101210199947 is 749991012101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101210199947 - 2² = 101210199943 is a prime.

Together with 101210199949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 101210199898 and 101210199907.

It is not a weakly prime, because it can be changed into another prime (101210199943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605099973 + 50605099974.

It is an arithmetic number, because the mean of its divisors is an integer number (50605099974).

Almost surely, 2^101210199947 is an apocalyptic number.

101210199947 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210199947 is an equidigital number, since it uses as much as digits as its factorization.

101210199947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 44.

The spelling of 101210199947 in words is "one hundred one billion, two hundred ten million, one hundred ninety-nine thousand, nine hundred forty-seven".