1211222100002 has 16 divisors (see below), whose sum is σ = 1861239409920. Its totient is φ = 590841604752.

The previous prime is 1211222099977. The next prime is 1211222100007. The reversal of 1211222100002 is 2000012221121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211222100002.

It is not an unprimeable number, because it can be changed into a prime (1211222100007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8085677 + ... + 8234112.

It is an arithmetic number, because the mean of its divisors is an integer number (116327463120).

Almost surely, 2^{1211222100002} is an apocalyptic number.

1211222100002 is a deficient number, since it is larger than the sum of its proper divisors (650017309918).

1211222100002 is a wasteful number, since it uses less digits than its factorization.

1211222100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16320697.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1211222100002 its reverse (2000012221121), we get a palindrome (3211234321123).

The spelling of 1211222100002 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, one hundred thousand, two".