101221212202111 has 8 divisors (see below), whose sum is σ = 109264277040480. Its totient is φ = 93481659244512.

The previous prime is 101221212202109. The next prime is 101221212202133. The reversal of 101221212202111 is 111202212122101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 101221212202111 - 2¹ = 101221212202109 is a prime.

It is a super-3 number, since 3×101221212202111³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221212202171) 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, 75877969500 + ... + 75877970833.

It is an arithmetic number, because the mean of its divisors is an integer number (13658034630060).

Almost surely, 2^{101221212202111} is an apocalyptic number.

101221212202111 is a deficient number, since it is larger than the sum of its proper divisors (8043064838369).

101221212202111 is a wasteful number, since it uses less digits than its factorization.

101221212202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151755940385.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 101221212202111 its reverse (111202212122101), we get a palindrome (212423424324212).

The spelling of 101221212202111 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twelve million, two hundred two thousand, one hundred eleven".