221110121012001 has 8 divisors (see below), whose sum is σ = 317491455812160. Its totient is φ = 136067766776592.

The previous prime is 221110121011993. The next prime is 221110121012107. The reversal of 221110121012001 is 100210121011122.

It is a happy number.

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

It is not a de Polignac number, because 221110121012001 - 2³ = 221110121011993 is a prime.

It is a super-2 number, since 2×221110121012001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221110121012201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2834745141141 + ... + 2834745141218.

It is an arithmetic number, because the mean of its divisors is an integer number (39686431976520).

Almost surely, 2^{221110121012001} is an apocalyptic number.

It is an amenable number.

221110121012001 is a deficient number, since it is larger than the sum of its proper divisors (96381334800159).

221110121012001 is a wasteful number, since it uses less digits than its factorization.

221110121012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669490282375.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221110121012001 its reverse (100210121011122), we get a palindrome (321320242023123).

The spelling of 221110121012001 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred twenty-one million, twelve thousand, one".