221201010122 has 8 divisors (see below), whose sum is σ = 332027081472. Its totient is φ = 110525316300.

The previous prime is 221201010101. The next prime is 221201010139. The reversal of 221201010122 is 221010102122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221201010097 and 221201010106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37590704 + ... + 37596587.

It is an arithmetic number, because the mean of its divisors is an integer number (41503385184).

Almost surely, 2^221201010122 is an apocalyptic number.

221201010122 is a deficient number, since it is larger than the sum of its proper divisors (110826071350).

221201010122 is a wasteful number, since it uses less digits than its factorization.

221201010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75188764.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221201010122 its reverse (221010102122), we get a palindrome (442211112244).

The spelling of 221201010122 in words is "two hundred twenty-one billion, two hundred one million, ten thousand, one hundred twenty-two".