1211211110202 has 8 divisors (see below), whose sum is σ = 2422422220416. Its totient is φ = 403737036732.

The previous prime is 1211211110189. The next prime is 1211211110203. The reversal of 1211211110202 is 2020111121121.

It is a happy number.

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

1211211110202 is an admirable number.

It is a super-2 number, since 2×1211211110202² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211211110203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100934259178 + ... + 100934259189.

It is an arithmetic number, because the mean of its divisors is an integer number (302802777552).

Almost surely, 2^{1211211110202} is an apocalyptic number.

1211211110202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211211110202 is a wasteful number, since it uses less digits than its factorization.

1211211110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201868518372.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1211211110202 its reverse (2020111121121), we get a palindrome (3231322231323).

The spelling of 1211211110202 in words is "one trillion, two hundred eleven billion, two hundred eleven million, one hundred ten thousand, two hundred two".