1211122100002 has 8 divisors (see below), whose sum is σ = 1816705640016. Its totient is φ = 605553553332.

The previous prime is 1211122099997. The next prime is 1211122100059. The reversal of 1211122100002 is 2000012211121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1211122100002² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3544168 + ... + 3870835.

It is an arithmetic number, because the mean of its divisors is an integer number (227088205002).

Almost surely, 2^{1211122100002} is an apocalyptic number.

1211122100002 is a deficient number, since it is larger than the sum of its proper divisors (605583540014).

1211122100002 is an equidigital number, since it uses as much as digits as its factorization.

1211122100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496672.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211122100002 its reverse (2000012211121), we get a palindrome (3211134311123).

The spelling of 1211122100002 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, one hundred thousand, two".