1001212202101 has 16 divisors (see below), whose sum is σ = 1018333375488. Its totient is φ = 984156505200.

The previous prime is 1001212202099. The next prime is 1001212202161. The reversal of 1001212202101 is 1012022121001.

It is a cyclic number.

It is not a de Polignac number, because 1001212202101 - 2¹ = 1001212202099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001212202161) 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, 191397156 + ... + 191402386.

It is an arithmetic number, because the mean of its divisors is an integer number (63645835968).

Almost surely, 2^{1001212202101} is an apocalyptic number.

It is an amenable number.

1001212202101 is a deficient number, since it is larger than the sum of its proper divisors (17121173387).

1001212202101 is an equidigital number, since it uses as much as digits as its factorization.

1001212202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10872.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001212202101 its reverse (1012022121001), we get a palindrome (2013234323102).

The spelling of 1001212202101 in words is "one trillion, one billion, two hundred twelve million, two hundred two thousand, one hundred one".