1201021021063 has 2 divisors, whose sum is σ = 1201021021064. Its totient is φ = 1201021021062.

The previous prime is 1201021021061. The next prime is 1201021021121. The reversal of 1201021021063 is 3601201201021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201021021063 - 2¹ = 1201021021061 is a prime.

It is a super-2 number, since 2×1201021021063² (a number of 25 digits) contains 22 as substring.

Together with 1201021021061, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1201021021063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201021021061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600510510531 + 600510510532.

It is an arithmetic number, because the mean of its divisors is an integer number (600510510532).

Almost surely, 2^{1201021021063} is an apocalyptic number.

1201021021063 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201021021063 is an equidigital number, since it uses as much as digits as its factorization.

1201021021063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1201021021063 its reverse (3601201201021), we get a palindrome (4802222222084).

The spelling of 1201021021063 in words is "one trillion, two hundred one billion, twenty-one million, twenty-one thousand, sixty-three".