1001211122222 has 8 divisors (see below), whose sum is σ = 1502187606000. Its totient is φ = 500481920224.

The previous prime is 1001211122221. The next prime is 1001211122231. The reversal of 1001211122222 is 2222211121001.

1001211122222 is digitally balanced in base 2, because in such base 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 a super-2 number, since 2×1001211122222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001211122222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001211122221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61810322 + ... + 61826517.

It is an arithmetic number, because the mean of its divisors is an integer number (187773450750).

Almost surely, 2^{1001211122222} is an apocalyptic number.

1001211122222 is a deficient number, since it is larger than the sum of its proper divisors (500976483778).

1001211122222 is a wasteful number, since it uses less digits than its factorization.

1001211122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123640890.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1001211122222 its reverse (2222211121001), we get a palindrome (3223422243223).

The spelling of 1001211122222 in words is "one trillion, one billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twenty-two".