1211402010111 has 8 divisors (see below), whose sum is σ = 1615214516400. Its totient is φ = 807595421952.

The previous prime is 1211402010101. The next prime is 1211402010179. The reversal of 1211402010111 is 1110102041121.

It is a happy number.

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

It is not a de Polignac number, because 1211402010111 - 2¹⁵ = 1211401977343 is a prime.

It is a super-3 number, since 3×1211402010111³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211402010101) 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, 977586 + ... + 1838063.

It is an arithmetic number, because the mean of its divisors is an integer number (201901814550).

Almost surely, 2^{1211402010111} is an apocalyptic number.

1211402010111 is a deficient number, since it is larger than the sum of its proper divisors (403812506289).

1211402010111 is a wasteful number, since it uses less digits than its factorization.

1211402010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959065.

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

Adding to 1211402010111 its reverse (1110102041121), we get a palindrome (2321504051232).

The spelling of 1211402010111 in words is "one trillion, two hundred eleven billion, four hundred two million, ten thousand, one hundred eleven".