1202021111947 has 2 divisors, whose sum is σ = 1202021111948. Its totient is φ = 1202021111946.

The previous prime is 1202021111899. The next prime is 1202021111987. The reversal of 1202021111947 is 7491111202021.

It is a strong prime.

It is an emirp because it is prime and its reverse (7491111202021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1202021111947 - 2²³ = 1202012723339 is a prime.

It is a super-2 number, since 2×1202021111947² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1202021111987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601010555973 + 601010555974.

It is an arithmetic number, because the mean of its divisors is an integer number (601010555974).

Almost surely, 2^{1202021111947} is an apocalyptic number.

1202021111947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202021111947 is an equidigital number, since it uses as much as digits as its factorization.

1202021111947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

Adding to 1202021111947 its reverse (7491111202021), we get a palindrome (8693132313968).

The spelling of 1202021111947 in words is "one trillion, two hundred two billion, twenty-one million, one hundred eleven thousand, nine hundred forty-seven".