121202201211042 has 128 divisors (see below), whose sum is σ = 290241715359744. Its totient is φ = 33017368220928.

The previous prime is 121202201211001. The next prime is 121202201211043. The reversal of 121202201211042 is 240112102202121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (121202201211043) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66889893 + ... + 68677959.

It is an arithmetic number, because the mean of its divisors is an integer number (2267513401248).

Almost surely, 2^{121202201211042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121202201211042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145120857679872).

121202201211042 is an abundant number, since it is smaller than the sum of its proper divisors (169039514148702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121202201211042 is a wasteful number, since it uses less digits than its factorization.

121202201211042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788992.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121202201211042 its reverse (240112102202121), we get a palindrome (361314303413163).

The spelling of 121202201211042 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred one million, two hundred eleven thousand, forty-two".