210021012201101 has 2 divisors, whose sum is σ = 210021012201102. Its totient is φ = 210021012201100.

The previous prime is 210021012201059. The next prime is 210021012201107. The reversal of 210021012201101 is 101102210120012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144914671878601 + 65106340322500 = 12038051^2 + 8068850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210021012201101 is a prime.

It is a super-4 number, since 4×210021012201101⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210021012201107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010506100550 + 105010506100551.

It is an arithmetic number, because the mean of its divisors is an integer number (105010506100551).

Almost surely, 2^{210021012201101} is an apocalyptic number.

It is an amenable number.

210021012201101 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021012201101 is an equidigital number, since it uses as much as digits as its factorization.

210021012201101 is an evil number, because the sum of its binary digits is even.

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

Adding to 210021012201101 its reverse (101102210120012), we get a palindrome (311123222321113).

The spelling of 210021012201101 in words is "two hundred ten trillion, twenty-one billion, twelve million, two hundred one thousand, one hundred one".