121421301102 has 32 divisors (see below), whose sum is σ = 270297730560. Its totient is φ = 40402874520.

The previous prime is 121421301101. The next prime is 121421301107. The reversal of 121421301102 is 201103124121.

It is a super-2 number, since 2×121421301102² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121421301101) 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, 1938118 + ... + 1999785.

It is an arithmetic number, because the mean of its divisors is an integer number (8446804080).

Almost surely, 2^121421301102 is an apocalyptic number.

121421301102 is an abundant number, since it is smaller than the sum of its proper divisors (148876429458).

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

121421301102 is a wasteful number, since it uses less digits than its factorization.

121421301102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938485 (or 3938479 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121421301102 its reverse (201103124121), we get a palindrome (322524425223).

The spelling of 121421301102 in words is "one hundred twenty-one billion, four hundred twenty-one million, three hundred one thousand, one hundred two".