101021211111 has 128 divisors (see below), whose sum is σ = 153893696256. Its totient is φ = 58657996800.

The previous prime is 101021211107. The next prime is 101021211119. The reversal of 101021211111 is 111112120101.

It is not a de Polignac number, because 101021211111 - 2² = 101021211107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021211119) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 737381035 + ... + 737381171.

It is an arithmetic number, because the mean of its divisors is an integer number (1202294502).

Almost surely, 2^101021211111 is an apocalyptic number.

101021211111 is a deficient number, since it is larger than the sum of its proper divisors (52872485145).

101021211111 is a wasteful number, since it uses less digits than its factorization.

101021211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 101021211111 its reverse (111112120101), we get a palindrome (212133331212).

The spelling of 101021211111 in words is "one hundred one billion, twenty-one million, two hundred eleven thousand, one hundred eleven".