22011311231012 has 6 divisors (see below), whose sum is σ = 38519794654278. Its totient is φ = 11005655615504.

The previous prime is 22011311230973. The next prime is 22011311231059. The reversal of 22011311231012 is 21013211311022.

It can be written as a sum of positive squares in only one way, i.e., 20829603090916 + 1181708140096 = 4563946^2 + 1087064^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2751413903873 + ... + 2751413903880.

It is an arithmetic number, because the mean of its divisors is an integer number (6419965775713).

Almost surely, 2^{22011311231012} is an apocalyptic number.

It is an amenable number.

22011311231012 is a deficient number, since it is larger than the sum of its proper divisors (16508483423266).

22011311231012 is a wasteful number, since it uses less digits than its factorization.

22011311231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502827807757 (or 5502827807755 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 22011311231012 its reverse (21013211311022), we get a palindrome (43024522542034).

The spelling of 22011311231012 in words is "twenty-two trillion, eleven billion, three hundred eleven million, two hundred thirty-one thousand, twelve".