20102221111001 has 16 divisors (see below), whose sum is σ = 20336473242624. Its totient is φ = 19869529397184.

The previous prime is 20102221110989. The next prime is 20102221111043. The reversal of 20102221111001 is 10011112220102.

It is a cyclic number.

It is not a de Polignac number, because 20102221111001 - 2³⁴ = 20085041241817 is a prime.

It is a super-3 number, since 3×20102221111001³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20102221111081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32352611 + ... + 32968103.

It is an arithmetic number, because the mean of its divisors is an integer number (1271029577664).

Almost surely, 2^{20102221111001} is an apocalyptic number.

It is an amenable number.

20102221111001 is a deficient number, since it is larger than the sum of its proper divisors (234252131623).

20102221111001 is a wasteful number, since it uses less digits than its factorization.

20102221111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616760.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20102221111001 its reverse (10011112220102), we get a palindrome (30113333331103).

The spelling of 20102221111001 in words is "twenty trillion, one hundred two billion, two hundred twenty-one million, one hundred eleven thousand, one".