2101223054535 has 16 divisors (see below), whose sum is σ = 3667589331840. Its totient is φ = 1018774814240.

The previous prime is 2101223054531. The next prime is 2101223054537. The reversal of 2101223054535 is 5354503221012.

It is not a de Polignac number, because 2101223054535 - 2² = 2101223054531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 2101223054496 and 2101223054505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101223054531) 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, 6367342425 + ... + 6367342754.

It is an arithmetic number, because the mean of its divisors is an integer number (229224333240).

Almost surely, 2^{2101223054535} is an apocalyptic number.

2101223054535 is a deficient number, since it is larger than the sum of its proper divisors (1566366277305).

2101223054535 is a wasteful number, since it uses less digits than its factorization.

2101223054535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12734685198.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 2101223054535 its reverse (5354503221012), we get a palindrome (7455726275547).

The spelling of 2101223054535 in words is "two trillion, one hundred one billion, two hundred twenty-three million, fifty-four thousand, five hundred thirty-five".