401012212220111 has 4 divisors (see below), whose sum is σ = 402277234971912. Its totient is φ = 399747189468312.

The previous prime is 401012212220083. The next prime is 401012212220149. The reversal of 401012212220111 is 111022212210104.

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 401012212220111 - 2⁶ = 401012212220047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401012212220171) 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, 632511375425 + ... + 632511376058.

It is an arithmetic number, because the mean of its divisors is an integer number (100569308742978).

Almost surely, 2^{401012212220111} is an apocalyptic number.

401012212220111 is a deficient number, since it is larger than the sum of its proper divisors (1265022751801).

401012212220111 is a wasteful number, since it uses less digits than its factorization.

401012212220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265022751800.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 401012212220111 its reverse (111022212210104), we get a palindrome (512034424430215).

The spelling of 401012212220111 in words is "four hundred one trillion, twelve billion, two hundred twelve million, two hundred twenty thousand, one hundred eleven".