1220211021102 has 64 divisors (see below), whose sum is σ = 2589438302208. Its totient is φ = 382651344000.

The previous prime is 1220211021101. The next prime is 1220211021119. The reversal of 1220211021102 is 2011201120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220211021101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8052577 + ... + 8202707.

It is an arithmetic number, because the mean of its divisors is an integer number (40459973472).

Almost surely, 2^{1220211021102} is an apocalyptic number.

1220211021102 is an abundant number, since it is smaller than the sum of its proper divisors (1369227281106).

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

1220211021102 is a wasteful number, since it uses less digits than its factorization.

1220211021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151385.

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

Adding to 1220211021102 its reverse (2011201120221), we get a palindrome (3231412141323).

The spelling of 1220211021102 in words is "one trillion, two hundred twenty billion, two hundred eleven million, twenty-one thousand, one hundred two".