20102021012147 has 2 divisors, whose sum is σ = 20102021012148. Its totient is φ = 20102021012146.

The previous prime is 20102021012107. The next prime is 20102021012153. The reversal of 20102021012147 is 74121012020102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20102021012147 - 2¹⁰ = 20102021011123 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102021012107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051010506073 + 10051010506074.

It is an arithmetic number, because the mean of its divisors is an integer number (10051010506074).

Almost surely, 2^{20102021012147} is an apocalyptic number.

20102021012147 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102021012147 is an equidigital number, since it uses as much as digits as its factorization.

20102021012147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 20102021012147 its reverse (74121012020102), we get a palindrome (94223033032249).

The spelling of 20102021012147 in words is "twenty trillion, one hundred two billion, twenty-one million, twelve thousand, one hundred forty-seven".