1201100021963 has 2 divisors, whose sum is σ = 1201100021964. Its totient is φ = 1201100021962.

The previous prime is 1201100021929. The next prime is 1201100022037. The reversal of 1201100021963 is 3691200011021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201100021963 - 2⁸ = 1201100021707 is a prime.

It is a super-3 number, since 3×1201100021963³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1201100021063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600550010981 + 600550010982.

It is an arithmetic number, because the mean of its divisors is an integer number (600550010982).

Almost surely, 2^{1201100021963} is an apocalyptic number.

1201100021963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201100021963 is an equidigital number, since it uses as much as digits as its factorization.

1201100021963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

Adding to 1201100021963 its reverse (3691200011021), we get a palindrome (4892300032984).

The spelling of 1201100021963 in words is "one trillion, two hundred one billion, one hundred million, twenty-one thousand, nine hundred sixty-three".