10201220221111 has 4 divisors (see below), whose sum is σ = 10225451148424. Its totient is φ = 10176989293800.

The previous prime is 10201220221099. The next prime is 10201220221133. The reversal of 10201220221111 is 11112202210201.

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 10201220221111 - 2¹⁹ = 10201219696823 is a prime.

It is a super-4 number, since 4×10201220221111⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201220221411) 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, 12115463025 + ... + 12115463866.

It is an arithmetic number, because the mean of its divisors is an integer number (2556362787106).

Almost surely, 2^{10201220221111} is an apocalyptic number.

10201220221111 is a deficient number, since it is larger than the sum of its proper divisors (24230927313).

10201220221111 is an equidigital number, since it uses as much as digits as its factorization.

10201220221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24230927312.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10201220221111 its reverse (11112202210201), we get a palindrome (21313422431312).

The spelling of 10201220221111 in words is "ten trillion, two hundred one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred eleven".