1201111221030 has 64 divisors (see below), whose sum is σ = 3318523845120. Its totient is φ = 272535761664.

The previous prime is 1201111221001. The next prime is 1201111221043. The reversal of 1201111221030 is 301221111021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20845600 + ... + 20903139.

It is an arithmetic number, because the mean of its divisors is an integer number (51851935080).

Almost surely, 2^{1201111221030} is an apocalyptic number.

1201111221030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201111221030 is an abundant number, since it is smaller than the sum of its proper divisors (2117412624090).

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

1201111221030 is a wasteful number, since it uses less digits than its factorization.

1201111221030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41748893.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1201111221030 its reverse (301221111021), we get a palindrome (1502332332051).

It can be divided in two parts, 1201111 and 221030, that added together give a triangular number (1422141 = T₁₆₈₆).

The spelling of 1201111221030 in words is "one trillion, two hundred one billion, one hundred eleven million, two hundred twenty-one thousand, thirty".