1021212221194 has 32 divisors (see below), whose sum is σ = 1698681134592. Its totient is φ = 456520776000.

The previous prime is 1021212221173. The next prime is 1021212221207. The reversal of 1021212221194 is 4911222121201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11816199 + ... + 11902309.

It is an arithmetic number, because the mean of its divisors is an integer number (53083785456).

Almost surely, 2^{1021212221194} is an apocalyptic number.

1021212221194 is a deficient number, since it is larger than the sum of its proper divisors (677468913398).

1021212221194 is a wasteful number, since it uses less digits than its factorization.

1021212221194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95022.

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 1021212221194 its reverse (4911222121201), we get a palindrome (5932434342395).

The spelling of 1021212221194 in words is "one trillion, twenty-one billion, two hundred twelve million, two hundred twenty-one thousand, one hundred ninety-four".