1000212020121 has 8 divisors (see below), whose sum is σ = 1334658734080. Its totient is φ = 666286659792.

The previous prime is 1000212020107. The next prime is 1000212020149. The reversal of 1000212020121 is 1210202120001.

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

It is not a de Polignac number, because 1000212020121 - 2⁵ = 1000212020089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1000212020097 and 1000212020106.

It is not an unprimeable number, because it can be changed into a prime (1000212020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130333930 + ... + 130341603.

It is an arithmetic number, because the mean of its divisors is an integer number (166832341760).

Almost surely, 2^{1000212020121} is an apocalyptic number.

It is an amenable number.

1000212020121 is a deficient number, since it is larger than the sum of its proper divisors (334446713959).

1000212020121 is a wasteful number, since it uses less digits than its factorization.

1000212020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260676815.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1000212020121 its reverse (1210202120001), we get a palindrome (2210414140122).

The spelling of 1000212020121 in words is "one trillion, two hundred twelve million, twenty thousand, one hundred twenty-one".