131211222401042 has 32 divisors (see below), whose sum is σ = 226049748841728. Its totient is φ = 55954791899136.

The previous prime is 131211222401033. The next prime is 131211222401047. The reversal of 131211222401042 is 240104222112131.

It is not an unprimeable number, because it can be changed into a prime (131211222401047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16088558 + ... + 22831209.

It is an arithmetic number, because the mean of its divisors is an integer number (7064054651304).

Almost surely, 2^{131211222401042} is an apocalyptic number.

131211222401042 is a deficient number, since it is larger than the sum of its proper divisors (94838526440686).

131211222401042 is a wasteful number, since it uses less digits than its factorization.

131211222401042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38920970.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 131211222401042 its reverse (240104222112131), we get a palindrome (371315444513173).

The spelling of 131211222401042 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred twenty-two million, four hundred one thousand, forty-two".