101221763 has 4 divisors (see below), whose sum is σ = 101615880. Its totient is φ = 100827648.

The previous prime is 101221739. The next prime is 101221777. The reversal of 101221763 is 367122101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101221763 - 2¹² = 101217667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101221733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196673 + ... + 197186.

It is an arithmetic number, because the mean of its divisors is an integer number (25403970).

Almost surely, 2^101221763 is an apocalyptic number.

101221763 is a deficient number, since it is larger than the sum of its proper divisors (394117).

101221763 is an equidigital number, since it uses as much as digits as its factorization.

101221763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394116.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 101221763 is about 10060.9026930987. The cubic root of 101221763 is about 466.0415440008.

Adding to 101221763 its reverse (367122101), we get a palindrome (468343864).

The spelling of 101221763 in words is "one hundred one million, two hundred twenty-one thousand, seven hundred sixty-three".