121120021063 has 2 divisors, whose sum is σ = 121120021064. Its totient is φ = 121120021062.

The previous prime is 121120021027. The next prime is 121120021147. The reversal of 121120021063 is 360120021121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121120021063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121120021063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121120021963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560010531 + 60560010532.

It is an arithmetic number, because the mean of its divisors is an integer number (60560010532).

Almost surely, 2^121120021063 is an apocalyptic number.

121120021063 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120021063 is an equidigital number, since it uses as much as digits as its factorization.

121120021063 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 121120021063 its reverse (360120021121), we get a palindrome (481240042184).

The spelling of 121120021063 in words is "one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, sixty-three".