11211010212111 has 8 divisors (see below), whose sum is σ = 15352013984304. Its totient is φ = 7272006624000.

The previous prime is 11211010212109. The next prime is 11211010212113. The reversal of 11211010212111 is 11121201011211.

It is an interprime number because it is at equal distance from previous prime (11211010212109) and next prime (11211010212113).

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

It is not a de Polignac number, because 11211010212111 - 2¹ = 11211010212109 is a prime.

It is a super-2 number, since 2×11211010212111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211010212113) 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, 50500045890 + ... + 50500046111.

It is an arithmetic number, because the mean of its divisors is an integer number (1919001748038).

Almost surely, 2^{11211010212111} is an apocalyptic number.

11211010212111 is a deficient number, since it is larger than the sum of its proper divisors (4141003772193).

11211010212111 is a wasteful number, since it uses less digits than its factorization.

11211010212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101000092041.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11211010212111 its reverse (11121201011211), we get a palindrome (22332211223322).

The spelling of 11211010212111 in words is "eleven trillion, two hundred eleven billion, ten million, two hundred twelve thousand, one hundred eleven".