210021121101 has 8 divisors (see below), whose sum is σ = 305485267104. Its totient is φ = 127285527920.

The previous prime is 210021121073. The next prime is 210021121111. The reversal of 210021121101 is 101121120012.

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

It is a cyclic number.

It is not a de Polignac number, because 210021121101 - 2⁷ = 210021120973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021121111) 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, 3182138166 + ... + 3182138231.

It is an arithmetic number, because the mean of its divisors is an integer number (38185658388).

Almost surely, 2^210021121101 is an apocalyptic number.

It is an amenable number.

210021121101 is a deficient number, since it is larger than the sum of its proper divisors (95464146003).

210021121101 is a wasteful number, since it uses less digits than its factorization.

210021121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364276411.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210021121101 its reverse (101121120012), we get a palindrome (311142241113).

The spelling of 210021121101 in words is "two hundred ten billion, twenty-one million, one hundred twenty-one thousand, one hundred one".