1211121022010 has 8 divisors (see below), whose sum is σ = 2180017839636. Its totient is φ = 484448408800.

The previous prime is 1211121021967. The next prime is 1211121022061. The reversal of 1211121022010 is 102201211121.

It can be written as a sum of positive squares in 2 ways, for example, as 1138474062049 + 72646959961 = 1066993^2 + 269531^2 .

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

It is a Curzon number.

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, 60556051091 + ... + 60556051110.

Almost surely, 2^{1211121022010} is an apocalyptic number.

1211121022010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211121022010 is a deficient number, since it is larger than the sum of its proper divisors (968896817626).

1211121022010 is a wasteful number, since it uses less digits than its factorization.

1211121022010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121112102208.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211121022010 its reverse (102201211121), we get a palindrome (1313322233131).

The spelling of 1211121022010 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, twenty-two thousand, ten".