101220111202011 has 4 divisors (see below), whose sum is σ = 134960148269352. Its totient is φ = 67480074134672.

The previous prime is 101220111201971. The next prime is 101220111202027. The reversal of 101220111202011 is 110202111022101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101220111202011 - 2⁹ = 101220111201499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101220111202211) 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, 16870018533666 + ... + 16870018533671.

It is an arithmetic number, because the mean of its divisors is an integer number (33740037067338).

Almost surely, 2^{101220111202011} is an apocalyptic number.

101220111202011 is a deficient number, since it is larger than the sum of its proper divisors (33740037067341).

101220111202011 is an equidigital number, since it uses as much as digits as its factorization.

101220111202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33740037067340.

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

Adding to 101220111202011 its reverse (110202111022101), we get a palindrome (211422222224112).

The spelling of 101220111202011 in words is "one hundred one trillion, two hundred twenty billion, one hundred eleven million, two hundred two thousand, eleven".