121222202210 has 16 divisors (see below), whose sum is σ = 218298247992. Its totient is φ = 48467040000.

The previous prime is 121222202207. The next prime is 121222202261. The reversal of 121222202210 is 12202222121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 121203548449 + 18653761 = 348143^2 + 4319^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2706791 + ... + 2751210.

Almost surely, 2^121222202210 is an apocalyptic number.

121222202210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121222202210 is a deficient number, since it is larger than the sum of its proper divisors (97076045782).

121222202210 is a wasteful number, since it uses less digits than its factorization.

121222202210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460229.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121222202210 its reverse (12202222121), we get a palindrome (133424424331).

The spelling of 121222202210 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, two hundred ten".