1000212220221 has 8 divisors (see below), whose sum is σ = 1333715039040. Its totient is φ = 666758774112.

The previous prime is 1000212220121. The next prime is 1000212220229. The reversal of 1000212220221 is 1220222120001.

1000212220221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1000212220221 - 2¹⁹ = 1000211695933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000212220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000212220229) 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, 12295881 + ... + 12376958.

It is an arithmetic number, because the mean of its divisors is an integer number (166714379880).

Almost surely, 2^{1000212220221} is an apocalyptic number.

It is an amenable number.

1000212220221 is a deficient number, since it is larger than the sum of its proper divisors (333502818819).

1000212220221 is a wasteful number, since it uses less digits than its factorization.

1000212220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24686355.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1000212220221 its reverse (1220222120001), we get a palindrome (2220434340222).

The spelling of 1000212220221 in words is "one trillion, two hundred twelve million, two hundred twenty thousand, two hundred twenty-one".