101221436 has 48 divisors (see below), whose sum is σ = 197299200. Its totient is φ = 45220032.

The previous prime is 101221427. The next prime is 101221447. The reversal of 101221436 is 634122101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137726 + ... + 138458.

It is an arithmetic number, because the mean of its divisors is an integer number (4110400).

Almost surely, 2^101221436 is an apocalyptic number.

It is an amenable number.

101221436 is a deficient number, since it is larger than the sum of its proper divisors (96077764).

101221436 is a wasteful number, since it uses less digits than its factorization.

101221436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 101221436 is about 10060.8864420587. The cubic root of 101221436 is about 466.0410421464.

Adding to 101221436 its reverse (634122101), we get a palindrome (735343537).

The spelling of 101221436 in words is "one hundred one million, two hundred twenty-one thousand, four hundred thirty-six".