1201100021210 has 16 divisors (see below), whose sum is σ = 2275768461600. Its totient is φ = 455153692176.

The previous prime is 1201100021171. The next prime is 1201100021213. The reversal of 1201100021210 is 121200011021.

It is a junction number, because it is equal to n+sod(n) for n = 1201100021191 and 1201100021200.

It is not an unprimeable number, because it can be changed into a prime (1201100021213) 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, 3160789340 + ... + 3160789719.

It is an arithmetic number, because the mean of its divisors is an integer number (142235528850).

Almost surely, 2^{1201100021210} is an apocalyptic number.

1201100021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201100021210 is a deficient number, since it is larger than the sum of its proper divisors (1074668440390).

1201100021210 is a wasteful number, since it uses less digits than its factorization.

1201100021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6321579085.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1201100021210 its reverse (121200011021), we get a palindrome (1322300032231).

The spelling of 1201100021210 in words is "one trillion, two hundred one billion, one hundred million, twenty-one thousand, two hundred ten".