1000212121101 has 8 divisors (see below), whose sum is σ = 1349683826400. Its totient is φ = 658774248272.

The previous prime is 1000212121087. The next prime is 1000212121141. The reversal of 1000212121101 is 1011212120001.

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 1000212121101 - 2¹⁸ = 1000211858957 is a prime.

It is a super-2 number, since 2×1000212121101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000212121141) 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, 2008457826 + ... + 2008458323.

It is an arithmetic number, because the mean of its divisors is an integer number (168710478300).

Almost surely, 2^{1000212121101} is an apocalyptic number.

It is an amenable number.

1000212121101 is a deficient number, since it is larger than the sum of its proper divisors (349471705299).

1000212121101 is an equidigital number, since it uses as much as digits as its factorization.

1000212121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016916235.

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

Adding to 1000212121101 its reverse (1011212120001), we get a palindrome (2011424241102).

The spelling of 1000212121101 in words is "one trillion, two hundred twelve million, one hundred twenty-one thousand, one hundred one".