20111101021210 has 8 divisors (see below), whose sum is σ = 36199981838196. Its totient is φ = 8044440408480.

The previous prime is 20111101021183. The next prime is 20111101021241. The reversal of 20111101021210 is 1212010111102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19396986448401 + 714114572809 = 4404201^2 + 845053^2 .

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

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, 1005555051051 + ... + 1005555051070.

Almost surely, 2^{20111101021210} is an apocalyptic number.

20111101021210 is a deficient number, since it is larger than the sum of its proper divisors (16088880816986).

20111101021210 is a wasteful number, since it uses less digits than its factorization.

20111101021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011110102128.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20111101021210 its reverse (1212010111102), we get a palindrome (21323111132312).

The spelling of 20111101021210 in words is "twenty trillion, one hundred eleven billion, one hundred one million, twenty-one thousand, two hundred ten".