22121101231202 has 4 divisors (see below), whose sum is σ = 33181651846806. Its totient is φ = 11060550615600.

The previous prime is 22121101231199. The next prime is 22121101231253. The reversal of 22121101231202 is 20213210112122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20558978708401 + 1562122522801 = 4534201^2 + 1249849^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5530275307799 + ... + 5530275307802.

Almost surely, 2^{22121101231202} is an apocalyptic number.

22121101231202 is a deficient number, since it is larger than the sum of its proper divisors (11060550615604).

22121101231202 is a wasteful number, since it uses less digits than its factorization.

22121101231202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060550615603.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 22121101231202 its reverse (20213210112122), we get a palindrome (42334311343324).

The spelling of 22121101231202 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred one million, two hundred thirty-one thousand, two hundred two".