121211222221202 has 32 divisors (see below), whose sum is σ = 182258415809280. Its totient is φ = 60458604595200.

The previous prime is 121211222221183. The next prime is 121211222221259. The reversal of 121211222221202 is 202122222112121.

It is a super-2 number, since 2×121211222221202² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11940810827 + ... + 11940820977.

It is an arithmetic number, because the mean of its divisors is an integer number (5695575494040).

Almost surely, 2^{121211222221202} is an apocalyptic number.

121211222221202 is a deficient number, since it is larger than the sum of its proper divisors (61047193588078).

121211222221202 is a wasteful number, since it uses less digits than its factorization.

121211222221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18026.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121211222221202 its reverse (202122222112121), we get a palindrome (323333444333323).

The spelling of 121211222221202 in words is "one hundred twenty-one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred two".