1211421220130 has 64 divisors (see below), whose sum is σ = 2398349036160. Its totient is φ = 436898841600.

The previous prime is 1211421220081. The next prime is 1211421220151. The reversal of 1211421220130 is 310221241121.

It is a super-3 number, since 3×1211421220130³ (a number of 37 digits) contains 333 as substring.

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, 25582916 + ... + 25630224.

It is an arithmetic number, because the mean of its divisors is an integer number (37474203690).

Almost surely, 2^{1211421220130} is an apocalyptic number.

1211421220130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211421220130 is a deficient number, since it is larger than the sum of its proper divisors (1186927816030).

1211421220130 is a wasteful number, since it uses less digits than its factorization.

1211421220130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49235.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1211421220130 its reverse (310221241121), we get a palindrome (1521642461251).

The spelling of 1211421220130 in words is "one trillion, two hundred eleven billion, four hundred twenty-one million, two hundred twenty thousand, one hundred thirty".