1012212121001 has 16 divisors (see below), whose sum is σ = 1018809792000. Its totient is φ = 1005637264128.

The previous prime is 1012212120971. The next prime is 1012212121003. The reversal of 1012212121001 is 1001212122101.

It is a cyclic number.

It is not a de Polignac number, because 1012212121001 - 2¹⁰ = 1012212119977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012212121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217724525 + ... + 217729173.

It is an arithmetic number, because the mean of its divisors is an integer number (63675612000).

Almost surely, 2^{1012212121001} is an apocalyptic number.

It is an amenable number.

1012212121001 is a deficient number, since it is larger than the sum of its proper divisors (6597670999).

1012212121001 is a wasteful number, since it uses less digits than its factorization.

1012212121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6808.

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

Adding to 1012212121001 its reverse (1001212122101), we get a palindrome (2013424243102).

It can be divided in two parts, 101221 and 2121001, that added together give a palindrome (2222222).

The spelling of 1012212121001 in words is "one trillion, twelve billion, two hundred twelve million, one hundred twenty-one thousand, one".