121210222011 has 16 divisors (see below), whose sum is σ = 170201447040. Its totient is φ = 76516997760.

The previous prime is 121210221967. The next prime is 121210222061. The reversal of 121210222011 is 110222012121.

It is not a de Polignac number, because 121210222011 - 2⁶ = 121210221947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121210222061) 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, 391710 + ... + 629171.

It is an arithmetic number, because the mean of its divisors is an integer number (10637590440).

Almost surely, 2^121210222011 is an apocalyptic number.

121210222011 is a deficient number, since it is larger than the sum of its proper divisors (48991225029).

121210222011 is a wasteful number, since it uses less digits than its factorization.

121210222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022986.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121210222011 its reverse (110222012121), we get a palindrome (231432234132).

The spelling of 121210222011 in words is "one hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, eleven".