2101101202221 has 8 divisors (see below), whose sum is σ = 3201678022464. Its totient is φ = 1200629258400.

The previous prime is 2101101202217. The next prime is 2101101202229. The reversal of 2101101202221 is 1222021011012.

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

It is not a de Polignac number, because 2101101202221 - 2² = 2101101202217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2101101202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101101202229) 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, 50026219080 + ... + 50026219121.

It is an arithmetic number, because the mean of its divisors is an integer number (400209752808).

Almost surely, 2^{2101101202221} is an apocalyptic number.

2101101202221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2101101202221 is a deficient number, since it is larger than the sum of its proper divisors (1100576820243).

2101101202221 is a wasteful number, since it uses less digits than its factorization.

2101101202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100052438211.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2101101202221 its reverse (1222021011012), we get a palindrome (3323122213233).

The spelling of 2101101202221 in words is "two trillion, one hundred one billion, one hundred one million, two hundred two thousand, two hundred twenty-one".